12403520321010 has 256 divisors, whose sum is σ = 37183957106688. Its totient is φ = 2578075315200.

The previous prime is 12403520320967. The next prime is 12403520321011. The reversal of 12403520321010 is 1012302530421.

It is not an unprimeable number, because it can be changed into a prime (12403520321011) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 247495855 + ... + 247545965.

It is an arithmetic number, because the mean of its divisors is an integer number (145249832448).

Almost surely, 2^{12403520321010} is an apocalyptic number.

12403520321010 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 12403520321010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18591978553344).

12403520321010 is an abundant number, since it is smaller than the sum of its proper divisors (24780436785678).

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

12403520321010 is a wasteful number, since it uses less digits than its factorization.

12403520321010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51489.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 12403520321010 its reverse (1012302530421), we get a palindrome (13415822851431).

The spelling of 12403520321010 in words is "twelve trillion, four hundred three billion, five hundred twenty million, three hundred twenty-one thousand, ten".