22551303959721 has 12 divisors (see below), whose sum is σ = 32599978734960. Its totient is φ = 15022261248120.

The previous prime is 22551303959693. The next prime is 22551303959819. The reversal of 22551303959721 is 12795930315522.

22551303959721 is a `hidden beast` number, since 2 + 2 + 5 + 5 + 13 + 0 + 39 + 597 + 2 + 1 = 666.

It is not a de Polignac number, because 22551303959721 - 2¹⁵ = 22551303926953 is a prime.

It is a super-2 number, since 2×22551303959721² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22551303959021) 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 11 ways as a sum of consecutive naturals, for example, 995104015 + ... + 995126676.

It is an arithmetic number, because the mean of its divisors is an integer number (2716664894580).

Almost surely, 2^{22551303959721} is an apocalyptic number.

It is an amenable number.

22551303959721 is a deficient number, since it is larger than the sum of its proper divisors (10048674775239).

22551303959721 is a wasteful number, since it uses less digits than its factorization.

22551303959721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1990231956 (or 1990231953 counting only the distinct ones).

The product of its (nonzero) digits is 5103000, while the sum is 54.

The spelling of 22551303959721 in words is "twenty-two trillion, five hundred fifty-one billion, three hundred three million, nine hundred fifty-nine thousand, seven hundred twenty-one".