2021201001 has 12 divisors (see below), whose sum is σ = 2921763312. Its totient is φ = 1346428536.

The previous prime is 2021200933. The next prime is 2021201027. The reversal of 2021201001 is 1001021202.

It is not a de Polignac number, because 2021201001 - 2¹³ = 2021192809 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 (2021201041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74151 + ... + 97676.

It is an arithmetic number, because the mean of its divisors is an integer number (243480276).

Almost surely, 2^2021201001 is an apocalyptic number.

It is an amenable number.

2021201001 is a deficient number, since it is larger than the sum of its proper divisors (900562311).

2021201001 is a wasteful number, since it uses less digits than its factorization.

2021201001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173140 (or 173137 counting only the distinct ones).

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

The square root of 2021201001 is about 44957.7690838858. The cubic root of 2021201001 is about 1264.3573422271.

Adding to 2021201001 its reverse (1001021202), we get a palindrome (3022222203).

The spelling of 2021201001 in words is "two billion, twenty-one million, two hundred one thousand, one".