22010392881 has 27 divisors (see below), whose sum is σ = 33784577281. Its totient is φ = 13805695104.

The previous prime is 22010392879. The next prime is 22010392883. The reversal of 22010392881 is 18829301022.

The square root of 22010392881 is 148359.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (22010392879) and next prime (22010392883).

It can be written as a sum of positive squares in 4 ways, for example, as 9305496225 + 12704896656 = 96465^2 + 112716^2 .

It is not a de Polignac number, because 22010392881 - 2¹ = 22010392879 is a prime.

It is a super-2 number, since 2×22010392881² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22010392883) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 7564855 + ... + 7567763.

Almost surely, 2^22010392881 is an apocalyptic number.

22010392881 is the 148359-th square number.

22010392881 is the 74180-th centered octagonal number.

It is an amenable number.

22010392881 is a deficient number, since it is larger than the sum of its proper divisors (11774184400).

22010392881 is an frugal number, since it uses more digits than its factorization.

22010392881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5858 (or 2929 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

Multiplying 22010392881 by its sum of digits (36), we get a square (792374143716 = 890154²).

The spelling of 22010392881 in words is "twenty-two billion, ten million, three hundred ninety-two thousand, eight hundred eighty-one".