121537424013 has 16 divisors (see below), whose sum is σ = 170929144320. Its totient is φ = 76602841776.

The previous prime is 121537424011. The next prime is 121537424027. The reversal of 121537424013 is 310424735121.

It is not a de Polignac number, because 121537424013 - 2¹ = 121537424011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121537424011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2161395 + ... + 2216912.

It is an arithmetic number, because the mean of its divisors is an integer number (10683071520).

Almost surely, 2^121537424013 is an apocalyptic number.

It is an amenable number.

121537424013 is a deficient number, since it is larger than the sum of its proper divisors (49391720307).

121537424013 is a wasteful number, since it uses less digits than its factorization.

121537424013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4378816.

The product of its (nonzero) digits is 20160, while the sum is 33.

The spelling of 121537424013 in words is "one hundred twenty-one billion, five hundred thirty-seven million, four hundred twenty-four thousand, thirteen".