22202101002181 has 2 divisors, whose sum is σ = 22202101002182. Its totient is φ = 22202101002180.

The previous prime is 22202101002097. The next prime is 22202101002251. The reversal of 22202101002181 is 18120010120222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19999088097156 + 2203012905025 = 4472034^2 + 1484255^2 .

It is a cyclic number.

It is not a de Polignac number, because 22202101002181 - 2²¹ = 22202098905029 is a prime.

It is a super-2 number, since 2×22202101002181² (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 (22202101009181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11101050501090 + 11101050501091.

It is an arithmetic number, because the mean of its divisors is an integer number (11101050501091).

Almost surely, 2^{22202101002181} is an apocalyptic number.

It is an amenable number.

22202101002181 is a deficient number, since it is larger than the sum of its proper divisors (1).

22202101002181 is an equidigital number, since it uses as much as digits as its factorization.

22202101002181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 22.

The spelling of 22202101002181 in words is "twenty-two trillion, two hundred two billion, one hundred one million, two thousand, one hundred eighty-one".