212212023091 has 2 divisors, whose sum is σ = 212212023092. Its totient is φ = 212212023090.

The previous prime is 212212023047. The next prime is 212212023137. The reversal of 212212023091 is 190320212212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212212023091 is a prime.

It is not a weakly prime, because it can be changed into another prime (212212023011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106106011545 + 106106011546.

It is an arithmetic number, because the mean of its divisors is an integer number (106106011546).

Almost surely, 2^212212023091 is an apocalyptic number.

212212023091 is a deficient number, since it is larger than the sum of its proper divisors (1).

212212023091 is an equidigital number, since it uses as much as digits as its factorization.

212212023091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The spelling of 212212023091 in words is "two hundred twelve billion, two hundred twelve million, twenty-three thousand, ninety-one".