22123321040 has 20 divisors (see below), whose sum is σ = 51436721604. Its totient is φ = 8849328384.

The previous prime is 22123321019. The next prime is 22123321057. The reversal of 22123321040 is 4012332122.

It can be written as a sum of positive squares in 2 ways, for example, as 4592501824 + 17530819216 = 67768^2 + 132404^2 .

It is a tau number, because it is divible by the number of its divisors (20).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138270677 + ... + 138270836.

Almost surely, 2^22123321040 is an apocalyptic number.

22123321040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22123321040 is an abundant number, since it is smaller than the sum of its proper divisors (29313400564).

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

22123321040 is a wasteful number, since it uses less digits than its factorization.

22123321040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276541526 (or 276541520 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 22123321040 its reverse (4012332122), we get a palindrome (26135653162).

The spelling of 22123321040 in words is "twenty-two billion, one hundred twenty-three million, three hundred twenty-one thousand, forty".