121331133121 has 4 divisors (see below), whose sum is σ = 132361236144. Its totient is φ = 110301030100.

The previous prime is 121331133107. The next prime is 121331133149.

121331133121 is nontrivially palindromic in base 10.

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 not a de Polignac number, because 121331133121 - 2²⁷ = 121196915393 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121331133092 and 121331133101.

It is not an unprimeable number, because it can be changed into a prime (121331133101) 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, 5515051495 + ... + 5515051516.

It is an arithmetic number, because the mean of its divisors is an integer number (33090309036).

Almost surely, 2^121331133121 is an apocalyptic number.

121331133121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121331133121 is a deficient number, since it is larger than the sum of its proper divisors (11030103023).

121331133121 is a wasteful number, since it uses less digits than its factorization.

121331133121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11030103022.

The product of its digits is 324, while the sum is 22.

It can be divided in two parts, 121331 and 133121, that added together give a palindrome (254452).

The spelling of 121331133121 in words is "one hundred twenty-one billion, three hundred thirty-one million, one hundred thirty-three thousand, one hundred twenty-one".