21002331343141 has 4 divisors (see below), whose sum is σ = 21002340708000. Its totient is φ = 21002321978284.

The previous prime is 21002331343127. The next prime is 21002331343151. The reversal of 21002331343141 is 14134313320012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21002331343141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21002331343111) 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, 900270 + ... + 6543328.

It is an arithmetic number, because the mean of its divisors is an integer number (5250585177000).

Almost surely, 2^{21002331343141} is an apocalyptic number.

It is an amenable number.

21002331343141 is a deficient number, since it is larger than the sum of its proper divisors (9364859).

21002331343141 is an equidigital number, since it uses as much as digits as its factorization.

21002331343141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9364858.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 21002331343141 its reverse (14134313320012), we get a palindrome (35136644663153).

The spelling of 21002331343141 in words is "twenty-one trillion, two billion, three hundred thirty-one million, three hundred forty-three thousand, one hundred forty-one".