22056747251 has 18 divisors (see below), whose sum is σ = 27994756788. Its totient is φ = 17184389040.

The previous prime is 22056747241. The next prime is 22056747329. The reversal of 22056747251 is 15274765022.

It is not a de Polignac number, because 22056747251 - 2¹⁸ = 22056485107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22056747199 and 22056747208.

It is not an unprimeable number, because it can be changed into a prime (22056747241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3444785 + ... + 3451181.

It is an arithmetic number, because the mean of its divisors is an integer number (1555264266).

Almost surely, 2^22056747251 is an apocalyptic number.

22056747251 is a deficient number, since it is larger than the sum of its proper divisors (5938009537).

22056747251 is an frugal number, since it uses more digits than its factorization.

22056747251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12819 (or 6415 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 41.

The spelling of 22056747251 in words is "twenty-two billion, fifty-six million, seven hundred forty-seven thousand, two hundred fifty-one".