220031110212191 has 2 divisors, whose sum is σ = 220031110212192. Its totient is φ = 220031110212190.

The previous prime is 220031110212113. The next prime is 220031110212227. The reversal of 220031110212191 is 191212011130022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220031110212191 - 2²² = 220031106017887 is a prime.

It is a super-2 number, since 2×220031110212191² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220031110212191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220031110212091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110015555106095 + 110015555106096.

It is an arithmetic number, because the mean of its divisors is an integer number (110015555106096).

Almost surely, 2^{220031110212191} is an apocalyptic number.

220031110212191 is a deficient number, since it is larger than the sum of its proper divisors (1).

220031110212191 is an equidigital number, since it uses as much as digits as its factorization.

220031110212191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 26.

The spelling of 220031110212191 in words is "two hundred twenty trillion, thirty-one billion, one hundred ten million, two hundred twelve thousand, one hundred ninety-one".