22123001232 has 100 divisors (see below), whose sum is σ = 64519660656. Its totient is φ = 7317984960.

The previous prime is 22123001227. The next prime is 22123001249. The reversal of 22123001232 is 23210032122.

It is a super-2 number, since 2×22123001232² (a number of 21 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 104623 + ... + 234929.

Almost surely, 2^22123001232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22123001232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32259830328).

22123001232 is an abundant number, since it is smaller than the sum of its proper divisors (42396659424).

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

22123001232 is a wasteful number, since it uses less digits than its factorization.

22123001232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130458 (or 130443 counting only the distinct ones).

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

Adding to 22123001232 its reverse (23210032122), we get a palindrome (45333033354).

The spelling of 22123001232 in words is "twenty-two billion, one hundred twenty-three million, one thousand, two hundred thirty-two".