22021111999 has 2 divisors, whose sum is σ = 22021112000. Its totient is φ = 22021111998.

The previous prime is 22021111979. The next prime is 22021112023. The reversal of 22021111999 is 99911112022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22021111999 - 2²¹ = 22019014847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22021111939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11010555999 + 11010556000.

It is an arithmetic number, because the mean of its divisors is an integer number (11010556000).

Almost surely, 2^22021111999 is an apocalyptic number.

22021111999 is a deficient number, since it is larger than the sum of its proper divisors (1).

22021111999 is an equidigital number, since it uses as much as digits as its factorization.

22021111999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 37.

The spelling of 22021111999 in words is "twenty-two billion, twenty-one million, one hundred eleven thousand, nine hundred ninety-nine".