22024551566421 has 6 divisors (see below), whose sum is σ = 31813241151510. Its totient is φ = 14683034377608.

The previous prime is 22024551566417. The next prime is 22024551566429. The reversal of 22024551566421 is 12466515542022.

22024551566421 is a `hidden beast` number, since 2 + 2 + 0 + 2 + 4 + 551 + 56 + 6 + 42 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 21165428348100 + 859123218321 = 4600590^2 + 926889^2 .

It is not a de Polignac number, because 22024551566421 - 2² = 22024551566417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22024551566429) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1223586198126 + ... + 1223586198143.

It is an arithmetic number, because the mean of its divisors is an integer number (5302206858585).

Almost surely, 2^{22024551566421} is an apocalyptic number.

It is an amenable number.

22024551566421 is a deficient number, since it is larger than the sum of its proper divisors (9788689585089).

22024551566421 is a wasteful number, since it uses less digits than its factorization.

22024551566421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2447172396275 (or 2447172396272 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 45.

The spelling of 22024551566421 in words is "twenty-two trillion, twenty-four billion, five hundred fifty-one million, five hundred sixty-six thousand, four hundred twenty-one".