2020020201 has 40 divisors (see below), whose sum is σ = 3144901320. Its totient is φ = 1290546432.

The previous prime is 2020020199. The next prime is 2020020203. The reversal of 2020020201 is 1020200202.

It is an interprime number because it is at equal distance from previous prime (2020020199) and next prime (2020020203).

It can be written as a sum of positive squares in 4 ways, for example, as 970260201 + 1049760000 = 31149^2 + 32400^2 .

It is not a de Polignac number, because 2020020201 - 2¹ = 2020020199 is a prime.

It is a super-2 number, since 2×2020020201² = 8160963224896160802, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (2020020203) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 318675 + ... + 324951.

It is an arithmetic number, because the mean of its divisors is an integer number (78622533).

Almost surely, 2^2020020201 is an apocalyptic number.

It is an amenable number.

2020020201 is a deficient number, since it is larger than the sum of its proper divisors (1124881119).

2020020201 is a wasteful number, since it uses less digits than its factorization.

2020020201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6455 (or 6446 counting only the distinct ones).

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

The square root of 2020020201 is about 44944.6348411020. The cubic root of 2020020201 is about 1264.1110787474. Note that the first 3 decimals are identical.

Adding to 2020020201 its reverse (1020200202), we get a palindrome (3040220403).

It can be divided in two parts, 20200 and 20201, that added together give a square (40401 = 201²).

The spelling of 2020020201 in words is "two billion, twenty million, twenty thousand, two hundred one".