2020213209 has 96 divisors (see below), whose sum is σ = 3437182080. Its totient is φ = 1048578048.

The previous prime is 2020213199. The next prime is 2020213249. The reversal of 2020213209 is 9023120202.

It is not a de Polignac number, because 2020213209 - 2²⁷ = 1885995481 is a prime.

It is a super-2 number, since 2×2020213209² = 8162522819636155362, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (2020213249) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 11677447 + ... + 11677619.

It is an arithmetic number, because the mean of its divisors is an integer number (35803980).

Almost surely, 2^2020213209 is an apocalyptic number.

It is an amenable number.

2020213209 is a deficient number, since it is larger than the sum of its proper divisors (1416968871).

2020213209 is a wasteful number, since it uses less digits than its factorization.

2020213209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359 (or 352 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 2020213209 is about 44946.7819648971. The cubic root of 2020213209 is about 1264.1513383746.

It can be divided in two parts, 20202 and 13209, that added together give a triangular number (33411 = T₂₅₈).

The spelling of 2020213209 in words is "two billion, twenty million, two hundred thirteen thousand, two hundred nine".