2210111220091 has 2 divisors, whose sum is σ = 2210111220092. Its totient is φ = 2210111220090.

The previous prime is 2210111220077. The next prime is 2210111220139. The reversal of 2210111220091 is 1900221110122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2210111220091 - 2⁷ = 2210111219963 is a prime.

It is not a weakly prime, because it can be changed into another prime (2210111220061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105055610045 + 1105055610046.

It is an arithmetic number, because the mean of its divisors is an integer number (1105055610046).

Almost surely, 2^{2210111220091} is an apocalyptic number.

2210111220091 is a deficient number, since it is larger than the sum of its proper divisors (1).

2210111220091 is an equidigital number, since it uses as much as digits as its factorization.

2210111220091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 2210111220091 in words is "two trillion, two hundred ten billion, one hundred eleven million, two hundred twenty thousand, ninety-one".