21334343231233 has 4 divisors (see below), whose sum is σ = 21345530618160. Its totient is φ = 21323155844308.

The previous prime is 21334343231221. The next prime is 21334343231249. The reversal of 21334343231233 is 33213234343312.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-21334343231233 is a prime.

It is a super-2 number, since 2×21334343231233² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21334343231192 and 21334343231201.

It is not an unprimeable number, because it can be changed into a prime (21334343231263) 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, 5593690603 + ... + 5593694416.

It is an arithmetic number, because the mean of its divisors is an integer number (5336382654540).

Almost surely, 2^{21334343231233} is an apocalyptic number.

It is an amenable number.

21334343231233 is a deficient number, since it is larger than the sum of its proper divisors (11187386927).

21334343231233 is a wasteful number, since it uses less digits than its factorization.

21334343231233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11187386926.

The product of its digits is 279936, while the sum is 37.

Adding to 21334343231233 its reverse (33213234343312), we get a palindrome (54547577574545).

The spelling of 21334343231233 in words is "twenty-one trillion, three hundred thirty-four billion, three hundred forty-three million, two hundred thirty-one thousand, two hundred thirty-three".