20112202220 has 24 divisors (see below), whose sum is σ = 46075227408. Its totient is φ = 7313528000.

The previous prime is 20112202211. The next prime is 20112202237. The reversal of 20112202220 is 2220221102.

It is a junction number, because it is equal to n+sod(n) for n = 20112202195 and 20112202204.

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, 45709331 + ... + 45709770.

It is an arithmetic number, because the mean of its divisors is an integer number (1919801142).

Almost surely, 2^20112202220 is an apocalyptic number.

20112202220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20112202220 is an abundant number, since it is smaller than the sum of its proper divisors (25963025188).

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

20112202220 is a wasteful number, since it uses less digits than its factorization.

20112202220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91419121 (or 91419119 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20112202220 its reverse (2220221102), we get a palindrome (22332423322).

The spelling of 20112202220 in words is "twenty billion, one hundred twelve million, two hundred two thousand, two hundred twenty".