220221112012091 has 2 divisors, whose sum is σ = 220221112012092. Its totient is φ = 220221112012090.

The previous prime is 220221112011973. The next prime is 220221112012133. The reversal of 220221112012091 is 190210211122022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220221112012091 - 2²⁶ = 220221044903227 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220221112012091.

It is not a weakly prime, because it can be changed into another prime (220221112014091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110110556006045 + 110110556006046.

It is an arithmetic number, because the mean of its divisors is an integer number (110110556006046).

Almost surely, 2^{220221112012091} is an apocalyptic number.

220221112012091 is a deficient number, since it is larger than the sum of its proper divisors (1).

220221112012091 is an equidigital number, since it uses as much as digits as its factorization.

220221112012091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 26.

The spelling of 220221112012091 in words is "two hundred twenty trillion, two hundred twenty-one billion, one hundred twelve million, twelve thousand, ninety-one".