21000310201015 has 8 divisors (see below), whose sum is σ = 25200407092608. Its totient is φ = 16800224926560.

The previous prime is 21000310200953. The next prime is 21000310201021. The reversal of 21000310201015 is 51010201300012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21000310201015 - 2¹⁹ = 21000309676727 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 21000310201015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1751034 + ... + 6713176.

It is an arithmetic number, because the mean of its divisors is an integer number (3150050886576).

Almost surely, 2^{21000310201015} is an apocalyptic number.

21000310201015 is a deficient number, since it is larger than the sum of its proper divisors (4200096891593).

21000310201015 is an equidigital number, since it uses as much as digits as its factorization.

21000310201015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5808569.

The product of its (nonzero) digits is 60, while the sum is 16.

Adding to 21000310201015 its reverse (51010201300012), we get a palindrome (72010511501027).

The spelling of 21000310201015 in words is "twenty-one trillion, three hundred ten million, two hundred one thousand, fifteen".