121513511514 has 32 divisors (see below), whose sum is σ = 256204210176. Its totient is φ = 38363906160.

The previous prime is 121513511477. The next prime is 121513511521. The reversal of 121513511514 is 415115315121.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6941242 + ... + 6958725.

It is an arithmetic number, because the mean of its divisors is an integer number (8006381568).

Almost surely, 2^121513511514 is an apocalyptic number.

121513511514 is an abundant number, since it is smaller than the sum of its proper divisors (134690698662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121513511514 is a wasteful number, since it uses less digits than its factorization.

121513511514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13900050.

The product of its digits is 3000, while the sum is 30.

Adding to 121513511514 its reverse (415115315121), we get a palindrome (536628826635).

The spelling of 121513511514 in words is "one hundred twenty-one billion, five hundred thirteen million, five hundred eleven thousand, five hundred fourteen".