22020312312 has 96 divisors (see below), whose sum is σ = 61306190400. Its totient is φ = 7135195392.

The previous prime is 22020312283. The next prime is 22020312329. The reversal of 22020312312 is 21321302022.

22020312312 is a `hidden beast` number, since 2 + 20 + 20 + 312 + 312 = 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 23 ways as a sum of consecutive naturals, for example, 3532014 + ... + 3538242.

It is an arithmetic number, because the mean of its divisors is an integer number (638606150).

Almost surely, 2^22020312312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22020312312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30653095200).

22020312312 is an abundant number, since it is smaller than the sum of its proper divisors (39285878088).

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

22020312312 is a wasteful number, since it uses less digits than its factorization.

22020312312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7605 (or 7598 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 22020312312 its reverse (21321302022), we get a palindrome (43341614334).

The spelling of 22020312312 in words is "twenty-two billion, twenty million, three hundred twelve thousand, three hundred twelve".