23122240400 has 120 divisors (see below), whose sum is σ = 66247557504. Its totient is φ = 7582924800.

The previous prime is 23122240391. The next prime is 23122240417. The reversal of 23122240400 is 404222132.

It is a super-2 number, since 2×23122240400² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 115121 + ... + 243920.

Almost surely, 2^23122240400 is an apocalyptic number.

23122240400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23122240400 is an abundant number, since it is smaller than the sum of its proper divisors (43125317104).

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

23122240400 is a wasteful number, since it uses less digits than its factorization.

23122240400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359089 (or 359078 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 23122240400 its reverse (404222132), we get a palindrome (23526462532).

The spelling of 23122240400 in words is "twenty-three billion, one hundred twenty-two million, two hundred forty thousand, four hundred".