222210121157 has 2 divisors, whose sum is σ = 222210121158. Its totient is φ = 222210121156.

The previous prime is 222210121123. The next prime is 222210121163. The reversal of 222210121157 is 751121012222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144319451236 + 77890669921 = 379894^2 + 279089^2 .

It is a cyclic number.

It is not a de Polignac number, because 222210121157 - 2⁶ = 222210121093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222210127157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111105060578 + 111105060579.

It is an arithmetic number, because the mean of its divisors is an integer number (111105060579).

Almost surely, 2^222210121157 is an apocalyptic number.

It is an amenable number.

222210121157 is a deficient number, since it is larger than the sum of its proper divisors (1).

222210121157 is an equidigital number, since it uses as much as digits as its factorization.

222210121157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1120, while the sum is 26.

Adding to 222210121157 its reverse (751121012222), we get a palindrome (973331133379).

The spelling of 222210121157 in words is "two hundred twenty-two billion, two hundred ten million, one hundred twenty-one thousand, one hundred fifty-seven".