202211220091 has 2 divisors, whose sum is σ = 202211220092. Its totient is φ = 202211220090.

The previous prime is 202211220089. The next prime is 202211220121. The reversal of 202211220091 is 190022112202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 202211220091 - 2¹ = 202211220089 is a prime.

Together with 202211220089, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (202211220031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101105610045 + 101105610046.

It is an arithmetic number, because the mean of its divisors is an integer number (101105610046).

Almost surely, 2^202211220091 is an apocalyptic number.

202211220091 is a deficient number, since it is larger than the sum of its proper divisors (1).

202211220091 is an equidigital number, since it uses as much as digits as its factorization.

202211220091 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.

Adding to 202211220091 its reverse (190022112202), we get a palindrome (392233332293).

The spelling of 202211220091 in words is "two hundred two billion, two hundred eleven million, two hundred twenty thousand, ninety-one".