21223243310 has 16 divisors (see below), whose sum is σ = 38233667952. Its totient is φ = 8482224000.

The previous prime is 21223243303. The next prime is 21223243313. The reversal of 21223243310 is 1334232212.

It is a super-2 number, since 2×21223243310² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21223243313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 871556 + ... + 895575.

It is an arithmetic number, because the mean of its divisors is an integer number (2389604247).

Almost surely, 2^21223243310 is an apocalyptic number.

21223243310 is a deficient number, since it is larger than the sum of its proper divisors (17010424642).

21223243310 is a wasteful number, since it uses less digits than its factorization.

21223243310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1768339.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21223243310 its reverse (1334232212), we get a palindrome (22557475522).

The spelling of 21223243310 in words is "twenty-one billion, two hundred twenty-three million, two hundred forty-three thousand, three hundred ten".