12123321310 has 16 divisors (see below), whose sum is σ = 21826598976. Its totient is φ = 4848301728.

The previous prime is 12123321263. The next prime is 12123321341. The reversal of 12123321310 is 1312332121.

It is a super-2 number, since 2×12123321310² (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, 77814 + ... + 174073.

It is an arithmetic number, because the mean of its divisors is an integer number (1364162436).

Almost surely, 2^12123321310 is an apocalyptic number.

12123321310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12123321310 is a deficient number, since it is larger than the sum of its proper divisors (9703277666).

12123321310 is a wasteful number, since it uses less digits than its factorization.

12123321310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256707.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 12123321310 its reverse (1312332121), we get a palindrome (13435653431).

The spelling of 12123321310 in words is "twelve billion, one hundred twenty-three million, three hundred twenty-one thousand, three hundred ten".