2021102002001 has 32 divisors (see below), whose sum is σ = 2230249697280. Its totient is φ = 1823009760000.

The previous prime is 2021102001953. The next prime is 2021102002009. The reversal of 2021102002001 is 1002002011202.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2021102002001 - 2³⁰ = 2020028260177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021102002009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 342382616 + ... + 342388518.

It is an arithmetic number, because the mean of its divisors is an integer number (69695303040).

Almost surely, 2^{2021102002001} is an apocalyptic number.

It is an amenable number.

2021102002001 is a deficient number, since it is larger than the sum of its proper divisors (209147695279).

2021102002001 is a wasteful number, since it uses less digits than its factorization.

2021102002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9437.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 2021102002001 its reverse (1002002011202), we get a palindrome (3023104013203).

The spelling of 2021102002001 in words is "two trillion, twenty-one billion, one hundred two million, two thousand, one".