212112322091 has 2 divisors, whose sum is σ = 212112322092. Its totient is φ = 212112322090.

The previous prime is 212112322069. The next prime is 212112322129. The reversal of 212112322091 is 190223211212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212112322091 - 2²⁶ = 212045213227 is a prime.

It is a super-2 number, since 2×212112322091² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212112322091.

It is not a weakly prime, because it can be changed into another prime (212112324091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106056161045 + 106056161046.

It is an arithmetic number, because the mean of its divisors is an integer number (106056161046).

Almost surely, 2^212112322091 is an apocalyptic number.

212112322091 is a deficient number, since it is larger than the sum of its proper divisors (1).

212112322091 is an equidigital number, since it uses as much as digits as its factorization.

212112322091 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 212112322091 in words is "two hundred twelve billion, one hundred twelve million, three hundred twenty-two thousand, ninety-one".