20110022220 has 48 divisors (see below), whose sum is σ = 56737916928. Its totient is φ = 5321734080.

The previous prime is 20110022213. The next prime is 20110022341. The reversal of 20110022220 is 2222001102.

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 = 20110022196 and 20110022205.

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, 1271404 + ... + 1287123.

It is an arithmetic number, because the mean of its divisors is an integer number (1182039936).

Almost surely, 2^20110022220 is an apocalyptic number.

20110022220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20110022220 is an abundant number, since it is smaller than the sum of its proper divisors (36627894708).

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

20110022220 is a wasteful number, since it uses less digits than its factorization.

20110022220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2558670 (or 2558668 counting only the distinct ones).

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

Adding to 20110022220 its reverse (2222001102), we get a palindrome (22332023322).

The spelling of 20110022220 in words is "twenty billion, one hundred ten million, twenty-two thousand, two hundred twenty".