23222001312 has 36 divisors (see below), whose sum is σ = 66037567050. Its totient is φ = 7740667008.

The previous prime is 23222001293. The next prime is 23222001317. The reversal of 23222001312 is 21310022232.

It can be written as a sum of positive squares in only one way, i.e., 22944978576 + 277022736 = 151476^2 + 16644^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×23222001312² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (23222001317) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40315687 + ... + 40316262.

Almost surely, 2^23222001312 is an apocalyptic number.

It is an amenable number.

23222001312 is an abundant number, since it is smaller than the sum of its proper divisors (42815565738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23222001312 is a wasteful number, since it uses less digits than its factorization.

23222001312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80631965 (or 80631954 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 23222001312 its reverse (21310022232), we get a palindrome (44532023544).

The spelling of 23222001312 in words is "twenty-three billion, two hundred twenty-two million, one thousand, three hundred twelve".