22000440312 has 48 divisors (see below), whose sum is σ = 59639055840. Its totient is φ = 7326768768.

The previous prime is 22000440307. The next prime is 22000440331. The reversal of 22000440312 is 21304400022.

22000440312 is a `hidden beast` number, since 220 + 0 + 0 + 440 + 3 + 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, 60288 + ... + 218255.

It is an arithmetic number, because the mean of its divisors is an integer number (1242480330).

Almost surely, 2^22000440312 is an apocalyptic number.

It is an amenable number.

22000440312 is an abundant number, since it is smaller than the sum of its proper divisors (37638615528).

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

22000440312 is a wasteful number, since it uses less digits than its factorization.

22000440312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279652 (or 279645 counting only the distinct ones).

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

Adding to 22000440312 its reverse (21304400022), we get a palindrome (43304840334).

The spelling of 22000440312 in words is "twenty-two billion, four hundred forty thousand, three hundred twelve".