2021220201 has 64 divisors (see below), whose sum is σ = 3716407296. Its totient is φ = 942969600.

The previous prime is 2021220193. The next prime is 2021220211. The reversal of 2021220201 is 1020221202.

It is not a de Polignac number, because 2021220201 - 2³ = 2021220193 is a prime.

It is a super-2 number, since 2×2021220201² = 8170662201860960802, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2021220211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 102016 + ... + 120206.

It is an arithmetic number, because the mean of its divisors is an integer number (58068864).

Almost surely, 2^2021220201 is an apocalyptic number.

2021220201 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2021220201 is a deficient number, since it is larger than the sum of its proper divisors (1695187095).

2021220201 is a wasteful number, since it uses less digits than its factorization.

2021220201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18262.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 2021220201 is about 44957.9826171059. The cubic root of 2021220201 is about 1264.3613457188.

Adding to 2021220201 its reverse (1020221202), we get a palindrome (3041441403).

It can be divided in two parts, 2021 and 220201, that added together give a palindrome (222222).

The spelling of 2021220201 in words is "two billion, twenty-one million, two hundred twenty thousand, two hundred one".