20112002220 has 48 divisors (see below), whose sum is σ = 57376136160. Its totient is φ = 5262007296.

The previous prime is 20112002191. The next prime is 20112002237. The reversal of 20112002220 is 2220021102.

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 = 20112002196 and 20112002205.

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, 3159085 + ... + 3165444.

It is an arithmetic number, because the mean of its divisors is an integer number (1195336170).

Almost surely, 2^20112002220 is an apocalyptic number.

20112002220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20112002220 is an abundant number, since it is smaller than the sum of its proper divisors (37264133940).

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

20112002220 is a wasteful number, since it uses less digits than its factorization.

20112002220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6324594 (or 6324592 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20112002220 its reverse (2220021102), we get a palindrome (22332023322).

The spelling of 20112002220 in words is "twenty billion, one hundred twelve million, two thousand, two hundred twenty".