12303421512 has 64 divisors (see below), whose sum is σ = 31301121600. Its totient is φ = 4028893440.

The previous prime is 12303421469. The next prime is 12303421523. The reversal of 12303421512 is 21512430321.

It is a super-2 number, since 2×12303421512² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4049658 + ... + 4052694.

It is an arithmetic number, because the mean of its divisors is an integer number (489080025).

Almost surely, 2^12303421512 is an apocalyptic number.

12303421512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12303421512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15650560800).

12303421512 is an abundant number, since it is smaller than the sum of its proper divisors (18997700088).

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

12303421512 is a wasteful number, since it uses less digits than its factorization.

12303421512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5966 (or 5962 counting only the distinct ones).

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

Adding to 12303421512 its reverse (21512430321), we get a palindrome (33815851833).

The spelling of 12303421512 in words is "twelve billion, three hundred three million, four hundred twenty-one thousand, five hundred twelve".