21323223310 has 16 divisors (see below), whose sum is σ = 38384869536. Its totient is φ = 8528607648.

The previous prime is 21323223293. The next prime is 21323223349. The reversal of 21323223310 is 1332232312.

It is a super-2 number, since 2×21323223310² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57559 + ... + 214381.

It is an arithmetic number, because the mean of its divisors is an integer number (2399054346).

Almost surely, 2^21323223310 is an apocalyptic number.

21323223310 is a deficient number, since it is larger than the sum of its proper divisors (17061646226).

21323223310 is a wasteful number, since it uses less digits than its factorization.

21323223310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170427.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 21323223310 its reverse (1332232312), we get a palindrome (22655455622).

The spelling of 21323223310 in words is "twenty-one billion, three hundred twenty-three million, two hundred twenty-three thousand, three hundred ten".