121113310131 has 40 divisors (see below), whose sum is σ = 204175738800. Its totient is φ = 70870887360.

The previous prime is 121113310127. The next prime is 121113310151. The reversal of 121113310131 is 131013311121.

121113310131 is a `hidden beast` number, since 1 + 211 + 13 + 310 + 131 = 666.

It is not a de Polignac number, because 121113310131 - 2² = 121113310127 is a prime.

It is a super-2 number, since 2×121113310131² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121113310151) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2317776 + ... + 2369453.

It is an arithmetic number, because the mean of its divisors is an integer number (5104393470).

Almost surely, 2^121113310131 is an apocalyptic number.

121113310131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121113310131 is a deficient number, since it is larger than the sum of its proper divisors (83062428669).

121113310131 is a wasteful number, since it uses less digits than its factorization.

121113310131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4687281 (or 4687272 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

Adding to 121113310131 its reverse (131013311121), we get a palindrome (252126621252).

The spelling of 121113310131 in words is "one hundred twenty-one billion, one hundred thirteen million, three hundred ten thousand, one hundred thirty-one".