21002310030001 has 4 divisors (see below), whose sum is σ = 21003045768432. Its totient is φ = 21001574291572.

The previous prime is 21002310029959. The next prime is 21002310030017. The reversal of 21002310030001 is 10003001320012.

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 21002310030001 - 2²¹ = 21002307932849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21002310030061) 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, 367826395 + ... + 367883488.

It is an arithmetic number, because the mean of its divisors is an integer number (5250761442108).

Almost surely, 2^{21002310030001} is an apocalyptic number.

It is an amenable number.

21002310030001 is a deficient number, since it is larger than the sum of its proper divisors (735738431).

21002310030001 is an equidigital number, since it uses as much as digits as its factorization.

21002310030001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735738430.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 21002310030001 its reverse (10003001320012), we get a palindrome (31005311350013).

The spelling of 21002310030001 in words is "twenty-one trillion, two billion, three hundred ten million, thirty thousand, one".