1022222200091 has 2 divisors, whose sum is σ = 1022222200092. Its totient is φ = 1022222200090.

The previous prime is 1022222200061. The next prime is 1022222200123. The reversal of 1022222200091 is 1900022222201.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1022222200091 is a prime.

It is not a weakly prime, because it can be changed into another prime (1022222200061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511111100045 + 511111100046.

It is an arithmetic number, because the mean of its divisors is an integer number (511111100046).

Almost surely, 2^{1022222200091} is an apocalyptic number.

1022222200091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022222200091 is an equidigital number, since it uses as much as digits as its factorization.

1022222200091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 1022222200091 its reverse (1900022222201), we get a palindrome (2922244422292).

The spelling of 1022222200091 in words is "one trillion, twenty-two billion, two hundred twenty-two million, two hundred thousand, ninety-one".