21323220223333 has 32 divisors (see below), whose sum is σ = 25619319855360. Its totient is φ = 17361846512640.

The previous prime is 21323220223307. The next prime is 21323220223363. The reversal of 21323220223333 is 33332202232312.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-21323220223333 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21323220223295 and 21323220223304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21323220223363) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1434991 + ... + 6686227.

It is an arithmetic number, because the mean of its divisors is an integer number (800603745480).

Almost surely, 2^{21323220223333} is an apocalyptic number.

It is an amenable number.

21323220223333 is a deficient number, since it is larger than the sum of its proper divisors (4296099632027).

21323220223333 is a wasteful number, since it uses less digits than its factorization.

21323220223333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5251597.

The product of its (nonzero) digits is 46656, while the sum is 31.

Adding to 21323220223333 its reverse (33332202232312), we get a palindrome (54655422455645).

The spelling of 21323220223333 in words is "twenty-one trillion, three hundred twenty-three billion, two hundred twenty million, two hundred twenty-three thousand, three hundred thirty-three".