21434312333 has 16 divisors (see below), whose sum is σ = 24849651456. Its totient is φ = 18107470080.

The previous prime is 21434312279. The next prime is 21434312371. The reversal of 21434312333 is 33321343412.

It is not a de Polignac number, because 21434312333 - 2¹⁰ = 21434311309 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21434312296 and 21434312305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21434312533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2118635 + ... + 2128727.

It is an arithmetic number, because the mean of its divisors is an integer number (1553103216).

Almost surely, 2^21434312333 is an apocalyptic number.

It is an amenable number.

21434312333 is a deficient number, since it is larger than the sum of its proper divisors (3415339123).

21434312333 is a wasteful number, since it uses less digits than its factorization.

21434312333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14444.

The product of its digits is 15552, while the sum is 29.

Adding to 21434312333 its reverse (33321343412), we get a palindrome (54755655745).

The spelling of 21434312333 in words is "twenty-one billion, four hundred thirty-four million, three hundred twelve thousand, three hundred thirty-three".