22021120199591 has 2 divisors, whose sum is σ = 22021120199592. Its totient is φ = 22021120199590.

The previous prime is 22021120199581. The next prime is 22021120199621. The reversal of 22021120199591 is 19599102112022.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22021120199591 is a prime.

It is a super-3 number, since 3×22021120199591³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22021120199521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11010560099795 + 11010560099796.

It is an arithmetic number, because the mean of its divisors is an integer number (11010560099796).

Almost surely, 2^{22021120199591} is an apocalyptic number.

22021120199591 is a deficient number, since it is larger than the sum of its proper divisors (1).

22021120199591 is an equidigital number, since it uses as much as digits as its factorization.

22021120199591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 44.

The spelling of 22021120199591 in words is "twenty-two trillion, twenty-one billion, one hundred twenty million, one hundred ninety-nine thousand, five hundred ninety-one".