22909831181 has 2 divisors, whose sum is σ = 22909831182. Its totient is φ = 22909831180.

The previous prime is 22909831171. The next prime is 22909831247. The reversal of 22909831181 is 18113890922.

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., 21267555556 + 1642275625 = 145834^2 + 40525^2 .

It is a cyclic number.

It is not a de Polignac number, because 22909831181 - 2¹⁴ = 22909814797 is a prime.

It is a super-2 number, since 2×22909831181² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22909831171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11454915590 + 11454915591.

It is an arithmetic number, because the mean of its divisors is an integer number (11454915591).

Almost surely, 2^22909831181 is an apocalyptic number.

It is an amenable number.

22909831181 is a deficient number, since it is larger than the sum of its proper divisors (1).

22909831181 is an equidigital number, since it uses as much as digits as its factorization.

22909831181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 44.

The spelling of 22909831181 in words is "twenty-two billion, nine hundred nine million, eight hundred thirty-one thousand, one hundred eighty-one".