12381501 has 16 divisors (see below), whose sum is σ = 18070848. Its totient is φ = 7478400.

The previous prime is 12381497. The next prime is 12381511. The reversal of 12381501 is 10518321.

It is not a de Polignac number, because 12381501 - 2² = 12381497 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12381511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14671 + ... + 15491.

It is an arithmetic number, because the mean of its divisors is an integer number (1129428).

Almost surely, 2^12381501 is an apocalyptic number.

12381501 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12381501 is a deficient number, since it is larger than the sum of its proper divisors (5689347).

12381501 is a wasteful number, since it uses less digits than its factorization.

12381501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1292.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 12381501 is about 3518.7357104506. The cubic root of 12381501 is about 231.3437471377.

Adding to 12381501 its reverse (10518321), we get a palindrome (22899822).

The spelling of 12381501 in words is "twelve million, three hundred eighty-one thousand, five hundred one".