21322321310 has 16 divisors (see below), whose sum is σ = 38382751152. Its totient is φ = 8528356800.

The previous prime is 21322321309. The next prime is 21322321331. The reversal of 21322321310 is 1312322312.

It is a super-2 number, since 2×21322321310² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106205 + ... + 232215.

It is an arithmetic number, because the mean of its divisors is an integer number (2398921947).

Almost surely, 2^21322321310 is an apocalyptic number.

21322321310 is a deficient number, since it is larger than the sum of its proper divisors (17060429842).

21322321310 is a wasteful number, since it uses less digits than its factorization.

21322321310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142939.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21322321310 its reverse (1312322312), we get a palindrome (22634643622).

The spelling of 21322321310 in words is "twenty-one billion, three hundred twenty-two million, three hundred twenty-one thousand, three hundred ten".