22131040204 has 96 divisors (see below), whose sum is σ = 48326061056. Its totient is φ = 8634781440.

The previous prime is 22131040199. The next prime is 22131040291. The reversal of 22131040204 is 40204013122.

It is a super-2 number, since 2×22131040204² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10384219 + ... + 10386349.

Almost surely, 2^22131040204 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 22131040204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24163030528).

22131040204 is an abundant number, since it is smaller than the sum of its proper divisors (26195020852).

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

22131040204 is a wasteful number, since it uses less digits than its factorization.

22131040204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2535 (or 2533 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 22131040204 its reverse (40204013122), we get a palindrome (62335053326).

The spelling of 22131040204 in words is "twenty-two billion, one hundred thirty-one million, forty thousand, two hundred four".