22267700981 has 2 divisors, whose sum is σ = 22267700982. Its totient is φ = 22267700980.

The previous prime is 22267700969. The next prime is 22267701041. The reversal of 22267700981 is 18900776222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21930648100 + 337052881 = 148090^2 + 18359^2 .

It is a cyclic number.

It is not a de Polignac number, because 22267700981 - 2³⁴ = 5087831797 is a prime.

It is a super-2 number, since 2×22267700981² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22267700681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11133850490 + 11133850491.

It is an arithmetic number, because the mean of its divisors is an integer number (11133850491).

Almost surely, 2^22267700981 is an apocalyptic number.

It is an amenable number.

22267700981 is a deficient number, since it is larger than the sum of its proper divisors (1).

22267700981 is an equidigital number, since it uses as much as digits as its factorization.

22267700981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 44.

The spelling of 22267700981 in words is "twenty-two billion, two hundred sixty-seven million, seven hundred thousand, nine hundred eighty-one".