212413120091 has 2 divisors, whose sum is σ = 212413120092. Its totient is φ = 212413120090.

The previous prime is 212413120079. The next prime is 212413120093. The reversal of 212413120091 is 190021314212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212413120091 - 2⁶ = 212413120027 is a prime.

Together with 212413120093, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212413120091.

It is not a weakly prime, because it can be changed into another prime (212413120093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106206560045 + 106206560046.

It is an arithmetic number, because the mean of its divisors is an integer number (106206560046).

Almost surely, 2^212413120091 is an apocalyptic number.

212413120091 is a deficient number, since it is larger than the sum of its proper divisors (1).

212413120091 is an equidigital number, since it uses as much as digits as its factorization.

212413120091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The spelling of 212413120091 in words is "two hundred twelve billion, four hundred thirteen million, one hundred twenty thousand, ninety-one".