21001334014233 has 6 divisors (see below), whose sum is σ = 30335260242794. Its totient is φ = 14000889342816.

The previous prime is 21001334014229. The next prime is 21001334014237. The reversal of 21001334014233 is 33241043310012.

It is a happy number.

21001334014233 is a `hidden beast` number, since 2 + 10 + 0 + 13 + 3 + 401 + 4 + 233 = 666.

It is an interprime number because it is at equal distance from previous prime (21001334014229) and next prime (21001334014237).

It can be written as a sum of positive squares in only one way, i.e., 20937103701264 + 64230312969 = 4575708^2 + 253437^2 .

It is not a de Polignac number, because 21001334014233 - 2² = 21001334014229 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21001334014197 and 21001334014206.

It is not an unprimeable number, because it can be changed into a prime (21001334014237) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1166740778560 + ... + 1166740778577.

Almost surely, 2^{21001334014233} is an apocalyptic number.

It is an amenable number.

21001334014233 is a deficient number, since it is larger than the sum of its proper divisors (9333926228561).

21001334014233 is a wasteful number, since it uses less digits than its factorization.

21001334014233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2333481557143 (or 2333481557140 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 21001334014233 its reverse (33241043310012), we get a palindrome (54242377324245).

The spelling of 21001334014233 in words is "twenty-one trillion, one billion, three hundred thirty-four million, fourteen thousand, two hundred thirty-three".