2021001201 has 24 divisors (see below), whose sum is σ = 2937089376. Its totient is φ = 1339116480.

The previous prime is 2021001193. The next prime is 2021001221. The reversal of 2021001201 is 1021001202.

It is not a de Polignac number, because 2021001201 - 2³ = 2021001193 is a prime.

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 (2021001221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1326226 + ... + 1327748.

It is an arithmetic number, because the mean of its divisors is an integer number (122378724).

Almost surely, 2^2021001201 is an apocalyptic number.

It is an amenable number.

2021001201 is a deficient number, since it is larger than the sum of its proper divisors (916088175).

2021001201 is a wasteful number, since it uses less digits than its factorization.

2021001201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2333 (or 2330 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 2021001201 is about 44955.5469436198. The cubic root of 2021001201 is about 1264.3156793872.

Adding to 2021001201 its reverse (1021001202), we get a palindrome (3042002403).

Subtracting from 2021001201 its reverse (1021001202), we obtain a palindrome (999999999).

It can be divided in two parts, 2021001 and 201, that added together give a palindrome (2021202).

The spelling of 2021001201 in words is "two billion, twenty-one million, one thousand, two hundred one".