121113202015 has 64 divisors (see below), whose sum is σ = 161913862656. Its totient is φ = 86411699712.

The previous prime is 121113202013. The next prime is 121113202057. The reversal of 121113202015 is 510202311121.

It is not a de Polignac number, because 121113202015 - 2¹ = 121113202013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121113201983 and 121113202001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121113202013) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 133531192 + ... + 133532098.

It is an arithmetic number, because the mean of its divisors is an integer number (2529904104).

Almost surely, 2^121113202015 is an apocalyptic number.

121113202015 is a deficient number, since it is larger than the sum of its proper divisors (40800660641).

121113202015 is a wasteful number, since it uses less digits than its factorization.

121113202015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1528.

The product of its (nonzero) digits is 120, while the sum is 19.

Adding to 121113202015 its reverse (510202311121), we get a palindrome (631315513136).

The spelling of 121113202015 in words is "one hundred twenty-one billion, one hundred thirteen million, two hundred two thousand, fifteen".