22111955112157 has 2 divisors, whose sum is σ = 22111955112158. Its totient is φ = 22111955112156.

The previous prime is 22111955112109. The next prime is 22111955112167. The reversal of 22111955112157 is 75121155911122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21570878646916 + 541076465241 = 4644446^2 + 735579^2 .

It is a cyclic number.

It is not a de Polignac number, because 22111955112157 - 2⁷ = 22111955112029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22111955112167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11055977556078 + 11055977556079.

It is an arithmetic number, because the mean of its divisors is an integer number (11055977556079).

Almost surely, 2^{22111955112157} is an apocalyptic number.

It is an amenable number.

22111955112157 is a deficient number, since it is larger than the sum of its proper divisors (1).

22111955112157 is an equidigital number, since it uses as much as digits as its factorization.

22111955112157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63000, while the sum is 43.

The spelling of 22111955112157 in words is "twenty-two trillion, one hundred eleven billion, nine hundred fifty-five million, one hundred twelve thousand, one hundred fifty-seven".