20112000220 has 48 divisors (see below), whose sum is σ = 45496946880. Its totient is φ = 7423865856.

The previous prime is 20112000191. The next prime is 20112000247. The reversal of 20112000220 is 2200021102.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 20112000197 and 20112000206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1141236 + ... + 1158724.

It is an arithmetic number, because the mean of its divisors is an integer number (947853060).

Almost surely, 2^20112000220 is an apocalyptic number.

20112000220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20112000220 is an abundant number, since it is smaller than the sum of its proper divisors (25384946660).

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

20112000220 is a wasteful number, since it uses less digits than its factorization.

20112000220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21934 (or 21932 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 20112000220 its reverse (2200021102), we get a palindrome (22312021322).

The spelling of 20112000220 in words is "twenty billion, one hundred twelve million, two hundred twenty", and thus it is an aban number.