222102001091 has 2 divisors, whose sum is σ = 222102001092. Its totient is φ = 222102001090.

The previous prime is 222102001087. The next prime is 222102001103. The reversal of 222102001091 is 190100201222.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 222102001091 - 2² = 222102001087 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (222102001001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111051000545 + 111051000546.

It is an arithmetic number, because the mean of its divisors is an integer number (111051000546).

Almost surely, 2^222102001091 is an apocalyptic number.

222102001091 is a deficient number, since it is larger than the sum of its proper divisors (1).

222102001091 is an equidigital number, since it uses as much as digits as its factorization.

222102001091 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 20.

The spelling of 222102001091 in words is "two hundred twenty-two billion, one hundred two million, one thousand, ninety-one".