22210022120981 has 2 divisors, whose sum is σ = 22210022120982. Its totient is φ = 22210022120980.

The previous prime is 22210022120947. The next prime is 22210022121043. The reversal of 22210022120981 is 18902122001222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22105428092881 + 104594028100 = 4701641^2 + 323410^2 .

It is a cyclic number.

It is not a de Polignac number, because 22210022120981 - 2³⁰ = 22208948379157 is a prime.

It is a super-2 number, since 2×22210022120981² (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 (22210022128981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11105011060490 + 11105011060491.

It is an arithmetic number, because the mean of its divisors is an integer number (11105011060491).

Almost surely, 2^{22210022120981} is an apocalyptic number.

It is an amenable number.

22210022120981 is a deficient number, since it is larger than the sum of its proper divisors (1).

22210022120981 is an equidigital number, since it uses as much as digits as its factorization.

22210022120981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 32.

The spelling of 22210022120981 in words is "twenty-two trillion, two hundred ten billion, twenty-two million, one hundred twenty thousand, nine hundred eighty-one".