22031000220 has 24 divisors (see below), whose sum is σ = 61686800784. Its totient is φ = 5874933376.

The previous prime is 22031000209. The next prime is 22031000231. The reversal of 22031000220 is 2200013022.

It is an interprime number because it is at equal distance from previous prime (22031000209) and next prime (22031000231).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 22031000196 and 22031000205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183591609 + ... + 183591728.

It is an arithmetic number, because the mean of its divisors is an integer number (2570283366).

Almost surely, 2^22031000220 is an apocalyptic number.

22031000220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22031000220 is an abundant number, since it is smaller than the sum of its proper divisors (39655800564).

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

22031000220 is a wasteful number, since it uses less digits than its factorization.

22031000220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367183349 (or 367183347 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

Adding to 22031000220 its reverse (2200013022), we get a palindrome (24231013242).

The spelling of 22031000220 in words is "twenty-two billion, thirty-one million, two hundred twenty", and thus it is an aban number.