12240521013 has 32 divisors (see below), whose sum is σ = 19175530752. Its totient is φ = 6799564800.

The previous prime is 12240521009. The next prime is 12240521099. The reversal of 12240521013 is 31012504221.

It is not a de Polignac number, because 12240521013 - 2² = 12240521009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12240521113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 216645 + ... + 267237.

It is an arithmetic number, because the mean of its divisors is an integer number (599235336).

Almost surely, 2^12240521013 is an apocalyptic number.

It is an amenable number.

12240521013 is a deficient number, since it is larger than the sum of its proper divisors (6935009739).

12240521013 is a wasteful number, since it uses less digits than its factorization.

12240521013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50925.

The product of its (nonzero) digits is 480, while the sum is 21.

The spelling of 12240521013 in words is "twelve billion, two hundred forty million, five hundred twenty-one thousand, thirteen".