121531064604 has 72 divisors (see below), whose sum is σ = 296500135680. Its totient is φ = 38726043552.

The previous prime is 121531064597. The next prime is 121531064617. The reversal of 121531064604 is 406460135121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 984567 + ... + 1101105.

It is an arithmetic number, because the mean of its divisors is an integer number (4118057440).

Almost surely, 2^121531064604 is an apocalyptic number.

It is an amenable number.

121531064604 is an abundant number, since it is smaller than the sum of its proper divisors (174969071076).

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

121531064604 is a wasteful number, since it uses less digits than its factorization.

121531064604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116679 (or 116634 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

Adding to 121531064604 its reverse (406460135121), we get a palindrome (527991199725).

The spelling of 121531064604 in words is "one hundred twenty-one billion, five hundred thirty-one million, sixty-four thousand, six hundred four".