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120220012121 = 1119575215369
BaseRepresentation
bin110111111110110101…
…0111100111001011001
3102111022100011101101112
41233331222330321121
53432202310341441
6131121152030105
711454110146106
oct1577552747131
9374270141345
10120220012121
1146a92076520
121b371532335
13b44b95a461
145b66657aad
1531d94644eb
hex1bfdabce59

120220012121 has 8 divisors (see below), whose sum is σ = 138051688800. Its totient is φ = 103538766240.

The previous prime is 120220012109. The next prime is 120220012139. The reversal of 120220012121 is 121210022021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120220012121 - 210 = 120220011097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120220012096 and 120220012105.

It is not an unprimeable number, because it can be changed into a prime (120220012141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 287607476 + ... + 287607893.

It is an arithmetic number, because the mean of its divisors is an integer number (17256461100).

Almost surely, 2120220012121 is an apocalyptic number.

120220012121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120220012121 is a deficient number, since it is larger than the sum of its proper divisors (17831676679).

120220012121 is a wasteful number, since it uses less digits than its factorization.

120220012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575215399.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 120220012121 its reverse (121210022021), we get a palindrome (241430034142).

The spelling of 120220012121 in words is "one hundred twenty billion, two hundred twenty million, twelve thousand, one hundred twenty-one".

Divisors: 1 11 19 209 575215369 6327369059 10929092011 120220012121