2021220010209 has 16 divisors (see below), whose sum is σ = 2727186047424. Its totient is φ = 1331421336000.

The previous prime is 2021220010207. The next prime is 2021220010211. The reversal of 2021220010209 is 9020100221202.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2021220010207) and next prime (2021220010211).

It is not a de Polignac number, because 2021220010209 - 2¹ = 2021220010207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2021220010207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6644194 + ... + 6941739.

It is an arithmetic number, because the mean of its divisors is an integer number (170449127964).

Almost surely, 2^{2021220010209} is an apocalyptic number.

It is an amenable number.

2021220010209 is a deficient number, since it is larger than the sum of its proper divisors (705966037215).

2021220010209 is a wasteful number, since it uses less digits than its factorization.

2021220010209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13586528.

The product of its (nonzero) digits is 288, while the sum is 21.

The spelling of 2021220010209 in words is "two trillion, twenty-one billion, two hundred twenty million, ten thousand, two hundred nine".