22402011312 has 30 divisors (see below), whose sum is σ = 62694518172. Its totient is φ = 7467337056.

The previous prime is 22402011283. The next prime is 22402011323. The reversal of 22402011312 is 21311020422.

It is a happy number.

It is a super-2 number, since 2×22402011312² (a number of 22 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 77784618 + ... + 77784905.

Almost surely, 2^22402011312 is an apocalyptic number.

It is an amenable number.

22402011312 is an abundant number, since it is smaller than the sum of its proper divisors (40292506860).

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

22402011312 is a wasteful number, since it uses less digits than its factorization.

22402011312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155569537 (or 155569528 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 22402011312 its reverse (21311020422), we get a palindrome (43713031734).

The spelling of 22402011312 in words is "twenty-two billion, four hundred two million, eleven thousand, three hundred twelve".