12222222222157 has 2 divisors, whose sum is σ = 12222222222158. Its totient is φ = 12222222222156.

The previous prime is 12222222222149. The next prime is 12222222222187. The reversal of 12222222222157 is 75122222222221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6603928575721 + 5618293646436 = 2569811^2 + 2370294^2 .

It is a cyclic number.

It is not a de Polignac number, because 12222222222157 - 2³ = 12222222222149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12222222222187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6111111111078 + 6111111111079.

It is an arithmetic number, because the mean of its divisors is an integer number (6111111111079).

Almost surely, 2^{12222222222157} is an apocalyptic number.

It is an amenable number.

12222222222157 is a deficient number, since it is larger than the sum of its proper divisors (1).

12222222222157 is an equidigital number, since it uses as much as digits as its factorization.

12222222222157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35840, while the sum is 34.

Adding to 12222222222157 its reverse (75122222222221), we get a palindrome (87344444444378).

The spelling of 12222222222157 in words is "twelve trillion, two hundred twenty-two billion, two hundred twenty-two million, two hundred twenty-two thousand, one hundred fifty-seven".