22001000202091 has 2 divisors, whose sum is σ = 22001000202092. Its totient is φ = 22001000202090.

The previous prime is 22001000202079. The next prime is 22001000202131. The reversal of 22001000202091 is 19020200010022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22001000202091 - 2¹⁷ = 22001000071019 is a prime.

It is not a weakly prime, because it can be changed into another prime (22001000202061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11000500101045 + 11000500101046.

It is an arithmetic number, because the mean of its divisors is an integer number (11000500101046).

Almost surely, 2^{22001000202091} is an apocalyptic number.

22001000202091 is a deficient number, since it is larger than the sum of its proper divisors (1).

22001000202091 is an equidigital number, since it uses as much as digits as its factorization.

22001000202091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

The spelling of 22001000202091 in words is "twenty-two trillion, one billion, two hundred two thousand, ninety-one".