20221102091 has 2 divisors, whose sum is σ = 20221102092. Its totient is φ = 20221102090.

The previous prime is 20221102087. The next prime is 20221102093. The reversal of 20221102091 is 19020112202.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20221102091 - 2² = 20221102087 is a prime.

Together with 20221102093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20221102093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110551045 + 10110551046.

It is an arithmetic number, because the mean of its divisors is an integer number (10110551046).

Almost surely, 2^20221102091 is an apocalyptic number.

20221102091 is a deficient number, since it is larger than the sum of its proper divisors (1).

20221102091 is an equidigital number, since it uses as much as digits as its factorization.

20221102091 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.

Adding to 20221102091 its reverse (19020112202), we get a palindrome (39241214293).

The spelling of 20221102091 in words is "twenty billion, two hundred twenty-one million, one hundred two thousand, ninety-one".