2020220100 has 54 divisors (see below), whose sum is σ = 6332270490. Its totient is φ = 538725120.

The previous prime is 2020220099. The next prime is 2020220117. The reversal of 2020220100 is 10220202.

It can be written as a sum of positive squares in 3 ways, for example, as 443018304 + 1577201796 = 21048^2 + 39714^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1121445 + ... + 1123244.

Almost surely, 2^2020220100 is an apocalyptic number.

2020220100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2020220100 is an abundant number, since it is smaller than the sum of its proper divisors (4312050390).

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

2020220100 is a wasteful number, since it uses less digits than its factorization.

2020220100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2244709 (or 2244699 counting only the distinct ones).

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

The square root of 2020220100 is about 44946.8586221551. The cubic root of 2020220100 is about 1264.1527757240.

Adding to 2020220100 its reverse (10220202), we get a palindrome (2030440302).

The spelling of 2020220100 in words is "two billion, twenty million, two hundred twenty thousand, one hundred".