22030021312 has 28 divisors (see below), whose sum is σ = 47078580976. Its totient is φ = 10167701760.

The previous prime is 22030021261. The next prime is 22030021339. The reversal of 22030021312 is 21312003022.

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 13238364 + ... + 13240027.

It is an arithmetic number, because the mean of its divisors is an integer number (1681377892).

Almost surely, 2^22030021312 is an apocalyptic number.

It is an amenable number.

22030021312 is an abundant number, since it is smaller than the sum of its proper divisors (25048559664).

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

22030021312 is a wasteful number, since it uses less digits than its factorization.

22030021312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26478416 (or 26478406 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 22030021312 its reverse (21312003022), we get a palindrome (43342024334).

The spelling of 22030021312 in words is "twenty-two billion, thirty million, twenty-one thousand, three hundred twelve".