21223312012310 has 32 divisors (see below), whose sum is σ = 38773295447040. Its totient is φ = 8362369284192.

The previous prime is 21223312012261. The next prime is 21223312012327. The reversal of 21223312012310 is 1321021332212.

It is a super-2 number, since 2×21223312012310² (a number of 27 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 15 ways as a sum of consecutive naturals, for example, 22892981 + ... + 23801999.

It is an arithmetic number, because the mean of its divisors is an integer number (1211665482720).

Almost surely, 2^{21223312012310} is an apocalyptic number.

21223312012310 is a deficient number, since it is larger than the sum of its proper divisors (17549983434730).

21223312012310 is a wasteful number, since it uses less digits than its factorization.

21223312012310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943940.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21223312012310 its reverse (1321021332212), we get a palindrome (22544333344522).

The spelling of 21223312012310 in words is "twenty-one trillion, two hundred twenty-three billion, three hundred twelve million, twelve thousand, three hundred ten".