22123122311999 has 4 divisors (see below), whose sum is σ = 22123147676520. Its totient is φ = 22123096947480.

The previous prime is 22123122311987. The next prime is 22123122312007. The reversal of 22123122311999 is 99911322132122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22123122311999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22123122311909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11325572 + ... + 13134489.

It is an arithmetic number, because the mean of its divisors is an integer number (5530786919130).

Almost surely, 2^{22123122311999} is an apocalyptic number.

22123122311999 is a deficient number, since it is larger than the sum of its proper divisors (25364521).

22123122311999 is an equidigital number, since it uses as much as digits as its factorization.

22123122311999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25364520.

The product of its digits is 209952, while the sum is 47.

The spelling of 22123122311999 in words is "twenty-two trillion, one hundred twenty-three billion, one hundred twenty-two million, three hundred eleven thousand, nine hundred ninety-nine".