12321520302 has 96 divisors (see below), whose sum is σ = 32213970432. Its totient is φ = 3108321216.

The previous prime is 12321520247. The next prime is 12321520313. The reversal of 12321520302 is 20302512321.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17823 + ... + 157989.

It is an arithmetic number, because the mean of its divisors is an integer number (335562192).

Almost surely, 2^12321520302 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12321520302, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16106985216).

12321520302 is an abundant number, since it is smaller than the sum of its proper divisors (19892450130).

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

12321520302 is a wasteful number, since it uses less digits than its factorization.

12321520302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140222 (or 140215 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The spelling of 12321520302 in words is "twelve billion, three hundred twenty-one million, five hundred twenty thousand, three hundred two".