222021120091 has 2 divisors, whose sum is σ = 222021120092. Its totient is φ = 222021120090.

The previous prime is 222021120037. The next prime is 222021120133. The reversal of 222021120091 is 190021120222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 222021120091 - 2¹¹ = 222021118043 is a prime.

It is not a weakly prime, because it can be changed into another prime (222021120491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111010560045 + 111010560046.

It is an arithmetic number, because the mean of its divisors is an integer number (111010560046).

Almost surely, 2^222021120091 is an apocalyptic number.

222021120091 is a deficient number, since it is larger than the sum of its proper divisors (1).

222021120091 is an equidigital number, since it uses as much as digits as its factorization.

222021120091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 222021120091 in words is "two hundred twenty-two billion, twenty-one million, one hundred twenty thousand, ninety-one".