21010213001013 has 4 divisors (see below), whose sum is σ = 28013617334688. Its totient is φ = 14006808667340.

The previous prime is 21010213000999. The next prime is 21010213001023. The reversal of 21010213001013 is 31010031201012.

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 a cyclic number.

It is not a de Polignac number, because 21010213001013 - 2⁴¹ = 18811189745461 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21010213000983 and 21010213001001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21010213001023) 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, 3501702166833 + ... + 3501702166838.

It is an arithmetic number, because the mean of its divisors is an integer number (7003404333672).

Almost surely, 2^{21010213001013} is an apocalyptic number.

It is an amenable number.

21010213001013 is a deficient number, since it is larger than the sum of its proper divisors (7003404333675).

21010213001013 is an equidigital number, since it uses as much as digits as its factorization.

21010213001013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7003404333674.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 21010213001013 its reverse (31010031201012), we get a palindrome (52020244202025).

The spelling of 21010213001013 in words is "twenty-one trillion, ten billion, two hundred thirteen million, one thousand, thirteen".