21313210112001 has 12 divisors (see below), whose sum is σ = 31028155405312. Its totient is φ = 14096926372536.

The previous prime is 21313210111993. The next prime is 21313210112003. The reversal of 21313210112001 is 10021101231312.

21313210112001 is a `hidden beast` number, since 2 + 131 + 321 + 0 + 11 + 200 + 1 = 666.

It is not a de Polignac number, because 21313210112001 - 2³ = 21313210111993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21313210112003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9323362861 + ... + 9323365146.

Almost surely, 2^{21313210112001} is an apocalyptic number.

It is an amenable number.

21313210112001 is a deficient number, since it is larger than the sum of its proper divisors (9714945293311).

21313210112001 is a wasteful number, since it uses less digits than its factorization.

21313210112001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18646728140 (or 18646728137 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 21313210112001 its reverse (10021101231312), we get a palindrome (31334311343313).

The spelling of 21313210112001 in words is "twenty-one trillion, three hundred thirteen billion, two hundred ten million, one hundred twelve thousand, one".