22102022212181 has 2 divisors, whose sum is σ = 22102022212182. Its totient is φ = 22102022212180.

The previous prime is 22102022212177. The next prime is 22102022212187. The reversal of 22102022212181 is 18121222020122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17317999020100 + 4784023192081 = 4161490^2 + 2187241^2 .

It is a cyclic number.

It is not a de Polignac number, because 22102022212181 - 2² = 22102022212177 is a prime.

It is a super-2 number, since 2×22102022212181² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22102022212181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22102022212187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11051011106090 + 11051011106091.

It is an arithmetic number, because the mean of its divisors is an integer number (11051011106091).

Almost surely, 2^{22102022212181} is an apocalyptic number.

It is an amenable number.

22102022212181 is a deficient number, since it is larger than the sum of its proper divisors (1).

22102022212181 is an equidigital number, since it uses as much as digits as its factorization.

22102022212181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1024, while the sum is 26.

The spelling of 22102022212181 in words is "twenty-two trillion, one hundred two billion, twenty-two million, two hundred twelve thousand, one hundred eighty-one".