2020211220 has 24 divisors (see below), whose sum is σ = 5656591584. Its totient is φ = 538722976.

The previous prime is 2020211213. The next prime is 2020211227. The reversal of 2020211220 is 221120202.

It is an interprime number because it is at equal distance from previous prime (2020211213) and next prime (2020211227).

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 = 2020211196 and 2020211205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020211227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16835034 + ... + 16835153.

It is an arithmetic number, because the mean of its divisors is an integer number (235691316).

Almost surely, 2^2020211220 is an apocalyptic number.

2020211220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2020211220 is an abundant number, since it is smaller than the sum of its proper divisors (3636380364).

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

2020211220 is a wasteful number, since it uses less digits than its factorization.

2020211220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33670199 (or 33670197 counting only the distinct ones).

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

The square root of 2020211220 is about 44946.7598387247. The cubic root of 2020211220 is about 1264.1509235012.

Adding to 2020211220 its reverse (221120202), we get a palindrome (2241331422).

The spelling of 2020211220 in words is "two billion, twenty million, two hundred eleven thousand, two hundred twenty".