22020012220 has 12 divisors (see below), whose sum is σ = 46242025704. Its totient is φ = 8808004880.

The previous prime is 22020012199. The next prime is 22020012241. The reversal of 22020012220 is 2221002022.

It is an interprime number because it is at equal distance from previous prime (22020012199) and next prime (22020012241).

It is a self number, because there is not a number n which added to its sum of digits gives 22020012220.

It is a congruent number.

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, 550500286 + ... + 550500325.

It is an arithmetic number, because the mean of its divisors is an integer number (3853502142).

Almost surely, 2^22020012220 is an apocalyptic number.

22020012220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22020012220 is an abundant number, since it is smaller than the sum of its proper divisors (24222013484).

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

22020012220 is a wasteful number, since it uses less digits than its factorization.

22020012220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101000620 (or 1101000618 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 22020012220 its reverse (2221002022), we get a palindrome (24241014242).

The spelling of 22020012220 in words is "twenty-two billion, twenty million, twelve thousand, two hundred twenty".