22355299181 has 2 divisors, whose sum is σ = 22355299182. Its totient is φ = 22355299180.

The previous prime is 22355299177. The next prime is 22355299207. The reversal of 22355299181 is 18199255322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14140777225 + 8214521956 = 118915^2 + 90634^2 .

It is a cyclic number.

It is not a de Polignac number, because 22355299181 - 2² = 22355299177 is a prime.

It is a super-2 number, since 2×22355299181² (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 (22355299151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11177649590 + 11177649591.

It is an arithmetic number, because the mean of its divisors is an integer number (11177649591).

Almost surely, 2^22355299181 is an apocalyptic number.

It is an amenable number.

22355299181 is a deficient number, since it is larger than the sum of its proper divisors (1).

22355299181 is an equidigital number, since it uses as much as digits as its factorization.

22355299181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 388800, while the sum is 47.

The spelling of 22355299181 in words is "twenty-two billion, three hundred fifty-five million, two hundred ninety-nine thousand, one hundred eighty-one".