210133013130021 has 4 divisors (see below), whose sum is σ = 280177350840032. Its totient is φ = 140088675420012.

The previous prime is 210133013129947. The next prime is 210133013130023. The reversal of 210133013130021 is 120031310331012.

It is a happy number.

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.

It is not a de Polignac number, because 210133013130021 - 2⁴² = 205734966618917 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 210133013130021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210133013130023) 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, 35022168855001 + ... + 35022168855006.

It is an arithmetic number, because the mean of its divisors is an integer number (70044337710008).

Almost surely, 2^{210133013130021} is an apocalyptic number.

It is an amenable number.

210133013130021 is a deficient number, since it is larger than the sum of its proper divisors (70044337710011).

210133013130021 is an equidigital number, since it uses as much as digits as its factorization.

210133013130021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70044337710010.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 210133013130021 its reverse (120031310331012), we get a palindrome (330164323461033).

The spelling of 210133013130021 in words is "two hundred ten trillion, one hundred thirty-three billion, thirteen million, one hundred thirty thousand, twenty-one".