220122201099491 has 2 divisors, whose sum is σ = 220122201099492. Its totient is φ = 220122201099490.

The previous prime is 220122201099379. The next prime is 220122201099499. The reversal of 220122201099491 is 194990102221022.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220122201099491 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (220122201099499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110061100549745 + 110061100549746.

It is an arithmetic number, because the mean of its divisors is an integer number (110061100549746).

Almost surely, 2^{220122201099491} is an apocalyptic number.

220122201099491 is a deficient number, since it is larger than the sum of its proper divisors (1).

220122201099491 is an equidigital number, since it uses as much as digits as its factorization.

220122201099491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 44.

The spelling of 220122201099491 in words is "two hundred twenty trillion, one hundred twenty-two billion, two hundred one million, ninety-nine thousand, four hundred ninety-one".