2020022100 has 108 divisors (see below), whose sum is σ = 6412020160. Its totient is φ = 531835200.

The previous prime is 2020022099. The next prime is 2020022101. The reversal of 2020022100 is 12200202.

It is an interprime number because it is at equal distance from previous prime (2020022099) and next prime (2020022101).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020022101) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 56895 + ... + 85305.

Almost surely, 2^2020022100 is an apocalyptic number.

2020022100 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 2020022100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3206010080).

2020022100 is an abundant number, since it is smaller than the sum of its proper divisors (4391998060).

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

2020022100 is a wasteful number, since it uses less digits than its factorization.

2020022100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28510 (or 28500 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 2020022100 is about 44944.6559670891. The cubic root of 2020022100 is about 1264.1114748731. Note that the first 3 decimals are identical.

Adding to 2020022100 its reverse (12200202), we get a palindrome (2032222302).

The spelling of 2020022100 in words is "two billion, twenty million, twenty-two thousand, one hundred".