22201201111181 has 2 divisors, whose sum is σ = 22201201111182. Its totient is φ = 22201201111180.

The previous prime is 22201201111157. The next prime is 22201201111217. The reversal of 22201201111181 is 18111110210222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11762389373956 + 10438811737225 = 3429634^2 + 3230915^2 .

It is a cyclic number.

It is not a de Polignac number, because 22201201111181 - 2²⁶ = 22201134002317 is a prime.

It is a super-2 number, since 2×22201201111181² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22201201111981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11100600555590 + 11100600555591.

It is an arithmetic number, because the mean of its divisors is an integer number (11100600555591).

Almost surely, 2^{22201201111181} is an apocalyptic number.

It is an amenable number.

22201201111181 is a deficient number, since it is larger than the sum of its proper divisors (1).

22201201111181 is an equidigital number, since it uses as much as digits as its factorization.

22201201111181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 23.

The spelling of 22201201111181 in words is "twenty-two trillion, two hundred one billion, two hundred one million, one hundred eleven thousand, one hundred eighty-one".