22222012157 has 2 divisors, whose sum is σ = 22222012158. Its totient is φ = 22222012156.

The previous prime is 22222012067. The next prime is 22222012159. The reversal of 22222012157 is 75121022222.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13626126361 + 8595885796 = 116731^2 + 92714^2 .

It is a cyclic number.

It is not a de Polignac number, because 22222012157 - 2²⁶ = 22154903293 is a prime.

Together with 22222012159, 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 (22222012159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11111006078 + 11111006079.

It is an arithmetic number, because the mean of its divisors is an integer number (11111006079).

Almost surely, 2^22222012157 is an apocalyptic number.

It is an amenable number.

22222012157 is a deficient number, since it is larger than the sum of its proper divisors (1).

22222012157 is an equidigital number, since it uses as much as digits as its factorization.

22222012157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 26.

Adding to 22222012157 its reverse (75121022222), we get a palindrome (97343034379).

The spelling of 22222012157 in words is "twenty-two billion, two hundred twenty-two million, twelve thousand, one hundred fifty-seven".