21342223310 has 16 divisors (see below), whose sum is σ = 38523016800. Its totient is φ = 8513108256.

The previous prime is 21342223307. The next prime is 21342223333. The reversal of 21342223310 is 1332224312.

It is a super-2 number, since 2×21342223310² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

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, 2968865 + ... + 2976044.

It is an arithmetic number, because the mean of its divisors is an integer number (2407688550).

Almost surely, 2^21342223310 is an apocalyptic number.

21342223310 is a deficient number, since it is larger than the sum of its proper divisors (17180793490).

21342223310 is a wasteful number, since it uses less digits than its factorization.

21342223310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5945275.

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

Adding to 21342223310 its reverse (1332224312), we get a palindrome (22674447622).

The spelling of 21342223310 in words is "twenty-one billion, three hundred forty-two million, two hundred twenty-three thousand, three hundred ten".