12321023312010 has 128 divisors (see below), whose sum is σ = 34053903028224. Its totient is φ = 2794657559040.

The previous prime is 12321023311973. The next prime is 12321023312011. The reversal of 12321023312010 is 1021332012321.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (12321023312011) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 80220349 + ... + 80373791.

It is an arithmetic number, because the mean of its divisors is an integer number (266046117408).

Almost surely, 2^{12321023312010} is an apocalyptic number.

12321023312010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12321023312010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17026951514112).

12321023312010 is an abundant number, since it is smaller than the sum of its proper divisors (21732879716214).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12321023312010 is a wasteful number, since it uses less digits than its factorization.

12321023312010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156388.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 12321023312010 its reverse (1021332012321), we get a palindrome (13342355324331).

The spelling of 12321023312010 in words is "twelve trillion, three hundred twenty-one billion, twenty-three million, three hundred twelve thousand, ten".