22222222157 has 2 divisors, whose sum is σ = 22222222158. Its totient is φ = 22222222156.

The previous prime is 22222222111. The next prime is 22222222159. The reversal of 22222222157 is 75122222222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16065309001 + 6156913156 = 126749^2 + 78466^2 .

It is a cyclic number.

It is not a de Polignac number, because 22222222157 - 2¹⁴ = 22222205773 is a prime.

Together with 22222222159, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22222222159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11111111078 + 11111111079.

It is an arithmetic number, because the mean of its divisors is an integer number (11111111079).

Almost surely, 2^22222222157 is an apocalyptic number.

It is an amenable number.

22222222157 is a deficient number, since it is larger than the sum of its proper divisors (1).

22222222157 is an equidigital number, since it uses as much as digits as its factorization.

22222222157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8960, while the sum is 29.

Adding to 22222222157 its reverse (75122222222), we get a palindrome (97344444379).

It can be divided in two parts, 2222222215 and 7, that added together give a palindrome (2222222222).

The spelling of 22222222157 in words is "twenty-two billion, two hundred twenty-two million, two hundred twenty-two thousand, one hundred fifty-seven".