21233123334 has 24 divisors (see below), whose sum is σ = 46009255032. Its totient is φ = 7077068640.

The previous prime is 21233123321. The next prime is 21233123339. The reversal of 21233123334 is 43332133212.

21233123334 is a `hidden beast` number, since 2 + 12 + 3 + 312 + 3 + 334 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 21233123298 and 21233123307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21233123339) 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, 178969 + ... + 272939.

It is an arithmetic number, because the mean of its divisors is an integer number (1917052293).

Almost surely, 2^21233123334 is an apocalyptic number.

21233123334 is an abundant number, since it is smaller than the sum of its proper divisors (24776131698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21233123334 is a wasteful number, since it uses less digits than its factorization.

21233123334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106532 (or 106529 counting only the distinct ones).

The product of its digits is 7776, while the sum is 27.

Adding to 21233123334 its reverse (43332133212), we get a palindrome (64565256546).

The spelling of 21233123334 in words is "twenty-one billion, two hundred thirty-three million, one hundred twenty-three thousand, three hundred thirty-four".