21313113102001 has 4 divisors (see below), whose sum is σ = 24357843545152. Its totient is φ = 18268382658852.

The previous prime is 21313113101989. The next prime is 21313113102013. The reversal of 21313113102001 is 10020131131312.

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 an interprime number because it is at equal distance from previous prime (21313113101989) and next prime (21313113102013).

It is a cyclic number.

It is not a de Polignac number, because 21313113102001 - 2¹¹ = 21313113099953 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 21313113102001.

It is not an unprimeable number, because it can be changed into a prime (21313113102041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1522365221565 + ... + 1522365221578.

It is an arithmetic number, because the mean of its divisors is an integer number (6089460886288).

Almost surely, 2^{21313113102001} is an apocalyptic number.

It is an amenable number.

21313113102001 is a deficient number, since it is larger than the sum of its proper divisors (3044730443151).

21313113102001 is an equidigital number, since it uses as much as digits as its factorization.

21313113102001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3044730443150.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 21313113102001 its reverse (10020131131312), we get a palindrome (31333244233313).

The spelling of 21313113102001 in words is "twenty-one trillion, three hundred thirteen billion, one hundred thirteen million, one hundred two thousand, one".