22202102020181 has 2 divisors, whose sum is σ = 22202102020182. Its totient is φ = 22202102020180.

The previous prime is 22202102020177. The next prime is 22202102020207. The reversal of 22202102020181 is 18102020120222.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20758821754225 + 1443280265956 = 4556185^2 + 1201366^2 .

It is a cyclic number.

It is not a de Polignac number, because 22202102020181 - 2² = 22202102020177 is a prime.

It is a super-2 number, since 2×22202102020181² (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 (22232102020181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11101051010090 + 11101051010091.

It is an arithmetic number, because the mean of its divisors is an integer number (11101051010091).

Almost surely, 2^{22202102020181} is an apocalyptic number.

It is an amenable number.

22202102020181 is a deficient number, since it is larger than the sum of its proper divisors (1).

22202102020181 is an equidigital number, since it uses as much as digits as its factorization.

22202102020181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 512, while the sum is 23.

The spelling of 22202102020181 in words is "twenty-two trillion, two hundred two billion, one hundred two million, twenty thousand, one hundred eighty-one".