22111877369 has 2 divisors, whose sum is σ = 22111877370. Its totient is φ = 22111877368.

The previous prime is 22111877353. The next prime is 22111877371. The reversal of 22111877369 is 96377811122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21028480144 + 1083397225 = 145012^2 + 32915^2 .

It is a cyclic number.

It is not a de Polignac number, because 22111877369 - 2⁴ = 22111877353 is a prime.

It is a super-2 number, since 2×22111877369² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 22111877371, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (22111877329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11055938684 + 11055938685.

It is an arithmetic number, because the mean of its divisors is an integer number (11055938685).

Almost surely, 2^22111877369 is an apocalyptic number.

It is an amenable number.

22111877369 is a deficient number, since it is larger than the sum of its proper divisors (1).

22111877369 is an equidigital number, since it uses as much as digits as its factorization.

22111877369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 47.

The spelling of 22111877369 in words is "twenty-two billion, one hundred eleven million, eight hundred seventy-seven thousand, three hundred sixty-nine".