20200020220 has 48 divisors (see below), whose sum is σ = 43615506816. Its totient is φ = 7853760000.

The previous prime is 20200020163. The next prime is 20200020257. The reversal of 20200020220 is 2202000202.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 20200020197 and 20200020206.

It is a congruent number.

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, 176770 + ... + 267670.

It is an arithmetic number, because the mean of its divisors is an integer number (908656392).

Almost surely, 2^20200020220 is an apocalyptic number.

20200020220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20200020220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21807753408).

20200020220 is an abundant number, since it is smaller than the sum of its proper divisors (23415486596).

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

20200020220 is a wasteful number, since it uses less digits than its factorization.

20200020220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91222 (or 91220 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 10.

Adding to 20200020220 its reverse (2202000202), we get a palindrome (22402020422).

The spelling of 20200020220 in words is "twenty billion, two hundred million, twenty thousand, two hundred twenty".