22220222112157 has 2 divisors, whose sum is σ = 22220222112158. Its totient is φ = 22220222112156.

The previous prime is 22220222112107. The next prime is 22220222112163. The reversal of 22220222112157 is 75121122202222.

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., 21917622003876 + 302600108281 = 4681626^2 + 550091^2 .

It is a cyclic number.

It is not a de Polignac number, because 22220222112157 - 2²³ = 22220213723549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22220222112107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11110111056078 + 11110111056079.

It is an arithmetic number, because the mean of its divisors is an integer number (11110111056079).

Almost surely, 2^{22220222112157} is an apocalyptic number.

It is an amenable number.

22220222112157 is a deficient number, since it is larger than the sum of its proper divisors (1).

22220222112157 is an equidigital number, since it uses as much as digits as its factorization.

22220222112157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8960, while the sum is 31.

Adding to 22220222112157 its reverse (75121122202222), we get a palindrome (97341344314379).

The spelling of 22220222112157 in words is "twenty-two trillion, two hundred twenty billion, two hundred twenty-two million, one hundred twelve thousand, one hundred fifty-seven".