1002021100231 has 4 divisors (see below), whose sum is σ = 1005182050392. Its totient is φ = 998860150072.

The previous prime is 1002021100181. The next prime is 1002021100243. The reversal of 1002021100231 is 1320011202001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1002021100231 - 2⁹ = 1002021099719 is a prime.

It is a super-2 number, since 2×1002021100231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002021100831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1580474605 + ... + 1580475238.

It is an arithmetic number, because the mean of its divisors is an integer number (251295512598).

Almost surely, 2^{1002021100231} is an apocalyptic number.

1002021100231 is a deficient number, since it is larger than the sum of its proper divisors (3160950161).

1002021100231 is an equidigital number, since it uses as much as digits as its factorization.

1002021100231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3160950160.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 1002021100231 its reverse (1320011202001), we get a palindrome (2322032302232).

The spelling of 1002021100231 in words is "one trillion, two billion, twenty-one million, one hundred thousand, two hundred thirty-one".