22311233021 has 16 divisors (see below), whose sum is σ = 27833448960. Its totient is φ = 17374847280.

The previous prime is 22311233011. The next prime is 22311233023. The reversal of 22311233021 is 12033211322.

It is not a de Polignac number, because 22311233021 - 2²⁶ = 22244124157 is a prime.

It is a super-3 number, since 3×22311233021³ (a number of 32 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 junction number, because it is equal to n+sod(n) for n = 22311232984 and 22311233002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22311233023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41450 + ... + 215268.

It is an arithmetic number, because the mean of its divisors is an integer number (1739590560).

Almost surely, 2^22311233021 is an apocalyptic number.

It is an amenable number.

22311233021 is a deficient number, since it is larger than the sum of its proper divisors (5522215939).

22311233021 is a wasteful number, since it uses less digits than its factorization.

22311233021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175504.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 22311233021 its reverse (12033211322), we get a palindrome (34344444343).

The spelling of 22311233021 in words is "twenty-two billion, three hundred eleven million, two hundred thirty-three thousand, twenty-one".