12321032010 has 128 divisors (see below), whose sum is σ = 34360934400. Its totient is φ = 2769451776.

The previous prime is 12321031993. The next prime is 12321032021. The reversal of 12321032010 is 1023012321.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3220959 + ... + 3224781.

It is an arithmetic number, because the mean of its divisors is an integer number (268444800).

Almost surely, 2^12321032010 is an apocalyptic number.

12321032010 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 12321032010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17180467200).

12321032010 is an abundant number, since it is smaller than the sum of its proper divisors (22039902390).

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

12321032010 is a wasteful number, since it uses less digits than its factorization.

12321032010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4092.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 12321032010 its reverse (1023012321), we get a palindrome (13344044331).

The spelling of 12321032010 in words is "twelve billion, three hundred twenty-one million, thirty-two thousand, ten".