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12012113232020 = 2251170977010599
BaseRepresentation
bin1010111011001100100110…
…1111100000000010010100
31120112100100211021001021102
42232303021233200002110
53033301301441411040
641314142202405232
72346563235541526
oct256631157400224
946470324231242
1012012113232020
113911343845360
121420040500818
1369197814b8b5
142d7564673a16
1515c6e15ab515
hexaecc9be0094

12012113232020 has 48 divisors (see below), whose sum is σ = 27557473104000. Its totient is φ = 4361880270720.

The previous prime is 12012113232013. The next prime is 12012113232047. The reversal of 12012113232020 is 2023231121021.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 12012113231983 and 12012113232001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38349320 + ... + 38661279.

It is an arithmetic number, because the mean of its divisors is an integer number (574114023000).

Almost surely, 212012113232020 is an apocalyptic number.

12012113232020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12012113232020 is an abundant number, since it is smaller than the sum of its proper divisors (15545359871980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12012113232020 is a wasteful number, since it uses less digits than its factorization.

12012113232020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77011328 (or 77011326 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 12012113232020 its reverse (2023231121021), we get a palindrome (14035344353041).

The spelling of 12012113232020 in words is "twelve trillion, twelve billion, one hundred thirteen million, two hundred thirty-two thousand, twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 709 1418 2836 3545 7090 7799 14180 15598 31196 38995 77990 155980 77010599 154021198 308042396 385052995 770105990 847116589 1540211980 1694233178 3388466356 4235582945 8471165890 16942331780 54600514691 109201029382 218402058764 273002573455 546005146910 600605661601 1092010293820 1201211323202 2402422646404 3003028308005 6006056616010 12012113232020