20110202220 has 48 divisors (see below), whose sum is σ = 56667246048. Its totient is φ = 5328560640.

The previous prime is 20110202201. The next prime is 20110202239. The reversal of 20110202220 is 2220201102.

It is an interprime number because it is at equal distance from previous prime (20110202201) and next prime (20110202239).

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 = 20110202196 and 20110202205.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1058001 + ... + 1076840.

It is an arithmetic number, because the mean of its divisors is an integer number (1180567626).

Almost surely, 2^20110202220 is an apocalyptic number.

20110202220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20110202220 is an abundant number, since it is smaller than the sum of its proper divisors (36557043828).

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

20110202220 is a wasteful number, since it uses less digits than its factorization.

20110202220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2135010 (or 2135008 counting only the distinct ones).

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

Adding to 20110202220 its reverse (2220201102), we get a palindrome (22330403322).

The spelling of 20110202220 in words is "twenty billion, one hundred ten million, two hundred two thousand, two hundred twenty".