12220124044221 has 40 divisors (see below), whose sum is σ = 18311846192640. Its totient is φ = 8121303878688.

The previous prime is 12220124044181. The next prime is 12220124044231. The reversal of 12220124044221 is 12244042102221.

12220124044221 is a `hidden beast` number, since 1 + 2 + 2 + 20 + 12 + 404 + 4 + 221 = 666.

It is not a de Polignac number, because 12220124044221 - 2³⁸ = 11945246137277 is a prime.

It is a super-2 number, since 2×12220124044221² (a number of 27 digits) contains 22 as substring.

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 (12220124044231) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 38808811 + ... + 39122423.

It is an arithmetic number, because the mean of its divisors is an integer number (457796154816).

Almost surely, 2^{12220124044221} is an apocalyptic number.

It is an amenable number.

12220124044221 is a deficient number, since it is larger than the sum of its proper divisors (6091722148419).

12220124044221 is a wasteful number, since it uses less digits than its factorization.

12220124044221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315127 (or 315118 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 27.

Adding to 12220124044221 its reverse (12244042102221), we get a palindrome (24464166146442).

The spelling of 12220124044221 in words is "twelve trillion, two hundred twenty billion, one hundred twenty-four million, forty-four thousand, two hundred twenty-one".