22311121220999 has 4 divisors (see below), whose sum is σ = 24027361314936. Its totient is φ = 20594881127064.

The previous prime is 22311121220989. The next prime is 22311121221049. The reversal of 22311121220999 is 99902212111322.

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

It is a cyclic number.

It is not a de Polignac number, because 22311121220999 - 2²⁰ = 22311120172423 is a prime.

It is a super-3 number, since 3×22311121220999³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22311121220939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 858120046949 + ... + 858120046974.

It is an arithmetic number, because the mean of its divisors is an integer number (6006840328734).

Almost surely, 2^{22311121220999} is an apocalyptic number.

22311121220999 is a deficient number, since it is larger than the sum of its proper divisors (1716240093937).

22311121220999 is a wasteful number, since it uses less digits than its factorization.

22311121220999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1716240093936.

The product of its (nonzero) digits is 69984, while the sum is 44.

The spelling of 22311121220999 in words is "twenty-two trillion, three hundred eleven billion, one hundred twenty-one million, two hundred twenty thousand, nine hundred ninety-nine".