121120010121 has 16 divisors (see below), whose sum is σ = 177918867648. Its totient is φ = 72679272000.

The previous prime is 121120010057. The next prime is 121120010147. The reversal of 121120010121 is 121010021121.

It is not a de Polignac number, because 121120010121 - 2⁶ = 121120010057 is a prime.

It is a super-2 number, since 2×121120010121² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121120010097 and 121120010106.

It is not an unprimeable number, because it can be changed into a prime (121120010521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18166486 + ... + 18173151.

It is an arithmetic number, because the mean of its divisors is an integer number (11119929228).

Almost surely, 2^121120010121 is an apocalyptic number.

121120010121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121120010121 is a deficient number, since it is larger than the sum of its proper divisors (56798857527).

121120010121 is a wasteful number, since it uses less digits than its factorization.

121120010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36339752.

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

Adding to 121120010121 its reverse (121010021121), we get a palindrome (242130031242).

The spelling of 121120010121 in words is "one hundred twenty-one billion, one hundred twenty million, ten thousand, one hundred twenty-one".