20002044220 has 24 divisors (see below), whose sum is σ = 42007393008. Its totient is φ = 8000227200.

The previous prime is 20002044187. The next prime is 20002044259. The reversal of 20002044220 is 2244020002.

It is a junction number, because it is equal to n+sod(n) for n = 20002044194 and 20002044203.

It is a congruent number.

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, 329655 + ... + 385585.

It is an arithmetic number, because the mean of its divisors is an integer number (1750308042).

Almost surely, 2^20002044220 is an apocalyptic number.

20002044220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20002044220 is an abundant number, since it is smaller than the sum of its proper divisors (22005348788).

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

20002044220 is a wasteful number, since it uses less digits than its factorization.

20002044220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73821 (or 73819 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

Adding to 20002044220 its reverse (2244020002), we get a palindrome (22246064222).

The spelling of 20002044220 in words is "twenty billion, two million, forty-four thousand, two hundred twenty".