22311322121 has 32 divisors (see below), whose sum is σ = 26174016000. Its totient is φ = 18793082880.

The previous prime is 22311322037. The next prime is 22311322127. The reversal of 22311322121 is 12122311322.

It is a de Polignac number, because none of the positive numbers 2^k-22311322121 is a prime.

It is a super-3 number, since 3×22311322121³ (a number of 32 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22311322093 and 22311322102.

It is not an unprimeable number, because it can be changed into a prime (22311322127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5508305 + ... + 5512353.

It is an arithmetic number, because the mean of its divisors is an integer number (817938000).

Almost surely, 2^22311322121 is an apocalyptic number.

It is an amenable number.

22311322121 is a deficient number, since it is larger than the sum of its proper divisors (3862693879).

22311322121 is a wasteful number, since it uses less digits than its factorization.

22311322121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4529.

The product of its digits is 288, while the sum is 20.

Adding to 22311322121 its reverse (12122311322), we get a palindrome (34433633443).

It can be divided in two parts, 22311322 and 121, that multiplied together give a palindrome (2699669962).

The spelling of 22311322121 in words is "twenty-two billion, three hundred eleven million, three hundred twenty-two thousand, one hundred twenty-one".