22010122181 has 2 divisors, whose sum is σ = 22010122182. Its totient is φ = 22010122180.

The previous prime is 22010122157. The next prime is 22010122219. The reversal of 22010122181 is 18122101022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14192909956 + 7817212225 = 119134^2 + 88415^2 .

It is a cyclic number.

It is not a de Polignac number, because 22010122181 - 2²⁶ = 21943013317 is a prime.

It is a super-2 number, since 2×22010122181² (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 (22010122111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11005061090 + 11005061091.

It is an arithmetic number, because the mean of its divisors is an integer number (11005061091).

Almost surely, 2^22010122181 is an apocalyptic number.

It is an amenable number.

22010122181 is a deficient number, since it is larger than the sum of its proper divisors (1).

22010122181 is an equidigital number, since it uses as much as digits as its factorization.

22010122181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 20.

The spelling of 22010122181 in words is "twenty-two billion, ten million, one hundred twenty-two thousand, one hundred eighty-one".