13131023222421 has 32 divisors (see below), whose sum is σ = 20966717291520. Its totient is φ = 8074096967232.

The previous prime is 13131023222411. The next prime is 13131023222431. The reversal of 13131023222421 is 12422232013131.

13131023222421 is a `hidden beast` number, since 1 + 3 + 1 + 3 + 1 + 0 + 232 + 2 + 2 + 421 = 666.

It is an interprime number because it is at equal distance from previous prime (13131023222411) and next prime (13131023222431).

It is not a de Polignac number, because 13131023222421 - 2¹⁰ = 13131023221397 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13131023222411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14687205 + ... + 15555578.

It is an arithmetic number, because the mean of its divisors is an integer number (655209915360).

Almost surely, 2^{13131023222421} is an apocalyptic number.

It is an amenable number.

13131023222421 is a deficient number, since it is larger than the sum of its proper divisors (7835694069099).

13131023222421 is a wasteful number, since it uses less digits than its factorization.

13131023222421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30244042 (or 30244036 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 13131023222421 its reverse (12422232013131), we get a palindrome (25553255235552).

The spelling of 13131023222421 in words is "thirteen trillion, one hundred thirty-one billion, twenty-three million, two hundred twenty-two thousand, four hundred twenty-one".