120010000121 has 4 divisors (see below), whose sum is σ = 130920000144. Its totient is φ = 109100000100.

The previous prime is 120010000109. The next prime is 120010000151. The reversal of 120010000121 is 121000010021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120010000121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120010000099 and 120010000108.

It is not an unprimeable number, because it can be changed into a prime (120010000151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5454999995 + ... + 5455000016.

It is an arithmetic number, because the mean of its divisors is an integer number (32730000036).

Almost surely, 2^120010000121 is an apocalyptic number.

120010000121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120010000121 is a deficient number, since it is larger than the sum of its proper divisors (10910000023).

120010000121 is a wasteful number, since it uses less digits than its factorization.

120010000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10910000022.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 120010000121 its reverse (121000010021), we get a palindrome (241010010142).

The spelling of 120010000121 in words is "one hundred twenty billion, ten million, one hundred twenty-one", and thus it is an aban number.