21310111344001 has 4 divisors (see below), whose sum is σ = 22431696151600. Its totient is φ = 20188526536404.

The previous prime is 21310111343999. The next prime is 21310111344007. The reversal of 21310111344001 is 10044311101312.

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 21310111344001 - 2¹ = 21310111343999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21310111344007) 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, 560792403771 + ... + 560792403808.

It is an arithmetic number, because the mean of its divisors is an integer number (5607924037900).

Almost surely, 2^{21310111344001} is an apocalyptic number.

It is an amenable number.

21310111344001 is a deficient number, since it is larger than the sum of its proper divisors (1121584807599).

21310111344001 is a wasteful number, since it uses less digits than its factorization.

21310111344001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121584807598.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 21310111344001 its reverse (10044311101312), we get a palindrome (31354422445313).

The spelling of 21310111344001 in words is "twenty-one trillion, three hundred ten billion, one hundred eleven million, three hundred forty-four thousand, one".