22453132981 has 2 divisors, whose sum is σ = 22453132982. Its totient is φ = 22453132980.

The previous prime is 22453132973. The next prime is 22453133023. The reversal of 22453132981 is 18923135422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18098320900 + 4354812081 = 134530^2 + 65991^2 .

It is a cyclic number.

It is not a de Polignac number, because 22453132981 - 2³ = 22453132973 is a prime.

It is a super-2 number, since 2×22453132981² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22453132921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11226566490 + 11226566491.

It is an arithmetic number, because the mean of its divisors is an integer number (11226566491).

Almost surely, 2^22453132981 is an apocalyptic number.

It is an amenable number.

22453132981 is a deficient number, since it is larger than the sum of its proper divisors (1).

22453132981 is an equidigital number, since it uses as much as digits as its factorization.

22453132981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 40.

The spelling of 22453132981 in words is "twenty-two billion, four hundred fifty-three million, one hundred thirty-two thousand, nine hundred eighty-one".