22040040312 has 48 divisors (see below), whose sum is σ = 59826606840. Its totient is φ = 7330085568.

The previous prime is 22040040307. The next prime is 22040040331. The reversal of 22040040312 is 21304004022.

22040040312 is a `hidden beast` number, since 220 + 40 + 0 + 403 + 1 + 2 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 313603 + ... + 377394.

Almost surely, 2^22040040312 is an apocalyptic number.

It is an amenable number.

22040040312 is an abundant number, since it is smaller than the sum of its proper divisors (37786566528).

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

22040040312 is a wasteful number, since it uses less digits than its factorization.

22040040312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691452 (or 691445 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 22040040312 its reverse (21304004022), we get a palindrome (43344044334).

The spelling of 22040040312 in words is "twenty-two billion, forty million, forty thousand, three hundred twelve".