22153524181 has 2 divisors, whose sum is σ = 22153524182. Its totient is φ = 22153524180.

The previous prime is 22153524167. The next prime is 22153524247. The reversal of 22153524181 is 18142535122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20890077156 + 1263447025 = 144534^2 + 35545^2 .

It is a cyclic number.

It is not a de Polignac number, because 22153524181 - 2²⁷ = 22019306453 is a prime.

It is a super-2 number, since 2×22153524181² (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 (22153524121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11076762090 + 11076762091.

It is an arithmetic number, because the mean of its divisors is an integer number (11076762091).

Almost surely, 2^22153524181 is an apocalyptic number.

It is an amenable number.

22153524181 is a deficient number, since it is larger than the sum of its proper divisors (1).

22153524181 is an equidigital number, since it uses as much as digits as its factorization.

22153524181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19200, while the sum is 34.

The spelling of 22153524181 in words is "twenty-two billion, one hundred fifty-three million, five hundred twenty-four thousand, one hundred eighty-one".