120111200121 has 24 divisors (see below), whose sum is σ = 185588632224. Its totient is φ = 68512622080.

The previous prime is 120111200117. The next prime is 120111200123. The reversal of 120111200121 is 121002111021.

It is not a de Polignac number, because 120111200121 - 2² = 120111200117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120111200097 and 120111200106.

It is not an unprimeable number, because it can be changed into a prime (120111200123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6287580 + ... + 6306653.

It is an arithmetic number, because the mean of its divisors is an integer number (7732859676).

Almost surely, 2^120111200121 is an apocalyptic number.

120111200121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120111200121 is a deficient number, since it is larger than the sum of its proper divisors (65477432103).

120111200121 is a wasteful number, since it uses less digits than its factorization.

120111200121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12594281 (or 12594264 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 120111200121 its reverse (121002111021), we get a palindrome (241113311142).

The spelling of 120111200121 in words is "one hundred twenty billion, one hundred eleven million, two hundred thousand, one hundred twenty-one".