121013123121 has 32 divisors (see below), whose sum is σ = 195598909440. Its totient is φ = 73332982800.

The previous prime is 121013122991. The next prime is 121013123129. The reversal of 121013123121 is 121321310121.

It is not a de Polignac number, because 121013123121 - 2²¹ = 121011025969 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121013123094 and 121013123103.

It is not an unprimeable number, because it can be changed into a prime (121013123129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3518076 + ... + 3552306.

It is an arithmetic number, because the mean of its divisors is an integer number (6112465920).

Almost surely, 2^121013123121 is an apocalyptic number.

121013123121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121013123121 is a deficient number, since it is larger than the sum of its proper divisors (74585786319).

121013123121 is a wasteful number, since it uses less digits than its factorization.

121013123121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46154 (or 46148 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 121013123121 its reverse (121321310121), we get a palindrome (242334433242).

The spelling of 121013123121 in words is "one hundred twenty-one billion, thirteen million, one hundred twenty-three thousand, one hundred twenty-one".