12321370 has 16 divisors (see below), whose sum is σ = 22778568. Its totient is φ = 4795200.

The previous prime is 12321359. The next prime is 12321391. The reversal of 12321370 is 7312321.

It can be written as a sum of positive squares in 4 ways, for example, as 12047841 + 273529 = 3471^2 + 523^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16281 + ... + 17020.

Almost surely, 2^12321370 is an apocalyptic number.

12321370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12321370 is a deficient number, since it is larger than the sum of its proper divisors (10457198).

12321370 is a wasteful number, since it uses less digits than its factorization.

12321370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33345.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 12321370 is about 3510.1809070189. The cubic root of 12321370 is about 230.9686307609.

Adding to 12321370 its reverse (7312321), we get a palindrome (19633691).

The spelling of 12321370 in words is "twelve million, three hundred twenty-one thousand, three hundred seventy".