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12012022010220 = 2235210407951491
BaseRepresentation
bin1010111011001100010001…
…0011100001000101101100
31120112100010110121111111020
42232303010103201011230
53033301110113311340
641314125143254140
72346561050300001
oct256630423410554
946470113544436
1012012022010220
1139112a72aa041
121420015a4a350
1369196228c7bb
142d75564c98a8
1515c6d858c9d0
hexaecc44e116c

12012022010220 has 48 divisors (see below), whose sum is σ = 33633856827648. Its totient is φ = 3203187279040.

The previous prime is 12012022010207. The next prime is 12012022010251. The reversal of 12012022010220 is 2201022021021.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12012022010220.

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, 12148675 + ... + 13100165.

It is an arithmetic number, because the mean of its divisors is an integer number (700705350576).

Almost surely, 212012022010220 is an apocalyptic number.

12012022010220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12012022010220 is an abundant number, since it is smaller than the sum of its proper divisors (21621834817428).

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

12012022010220 is a wasteful number, since it uses less digits than its factorization.

12012022010220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161910 (or 1161908 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 12012022010220 its reverse (2201022021021), we get a palindrome (14213044031241).

The spelling of 12012022010220 in words is "twelve trillion, twelve billion, twenty-two million, ten thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 210407 420814 631221 841628 951491 1052035 1262442 1902982 2104070 2524884 2854473 3156105 3805964 4208140 4757455 5708946 6312210 9514910 11417892 12624420 14272365 19029820 28544730 57089460 200200366837 400400733674 600601100511 800801467348 1001001834185 1201202201022 2002003668370 2402404402044 3003005502555 4004007336740 6006011005110 12012022010220