212212023137 has 2 divisors, whose sum is σ = 212212023138. Its totient is φ = 212212023136.

The previous prime is 212212023091. The next prime is 212212023157. The reversal of 212212023137 is 731320212212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201866895616 + 10345127521 = 449296^2 + 101711^2 .

It is a cyclic number.

It is not a de Polignac number, because 212212023137 - 2²⁶ = 212144914273 is a prime.

It is not a weakly prime, because it can be changed into another prime (212212023157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106106011568 + 106106011569.

It is an arithmetic number, because the mean of its divisors is an integer number (106106011569).

Almost surely, 2^212212023137 is an apocalyptic number.

It is an amenable number.

212212023137 is a deficient number, since it is larger than the sum of its proper divisors (1).

212212023137 is an equidigital number, since it uses as much as digits as its factorization.

212212023137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 26.

Adding to 212212023137 its reverse (731320212212), we get a palindrome (943532235349).

The spelling of 212212023137 in words is "two hundred twelve billion, two hundred twelve million, twenty-three thousand, one hundred thirty-seven".