12321712 has 20 divisors (see below), whose sum is σ = 25710160. Its totient is φ = 5686848.

The previous prime is 12321691. The next prime is 12321713. The reversal of 12321712 is 21712321.

It is a super-4 number, since 4×12321712⁴ (a number of 29 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 12321712.

It is not an unprimeable number, because it can be changed into a prime (12321713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29412 + ... + 29827.

It is an arithmetic number, because the mean of its divisors is an integer number (1285508).

Almost surely, 2^12321712 is an apocalyptic number.

It is an amenable number.

12321712 is an abundant number, since it is smaller than the sum of its proper divisors (13388448).

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

12321712 is a wasteful number, since it uses less digits than its factorization.

12321712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59260 (or 59254 counting only the distinct ones).

The product of its digits is 168, while the sum is 19.

The square root of 12321712 is about 3510.2296221188. The cubic root of 12321712 is about 230.9707677132.

The spelling of 12321712 in words is "twelve million, three hundred twenty-one thousand, seven hundred twelve".