12102621 has 4 divisors (see below), whose sum is σ = 16136832. Its totient is φ = 8068412.

The previous prime is 12102613. The next prime is 12102631. The reversal of 12102621 is 12620121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12102621 - 2³ = 12102613 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12102621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102631) 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, 2017101 + ... + 2017106.

It is an arithmetic number, because the mean of its divisors is an integer number (4034208).

Almost surely, 2^12102621 is an apocalyptic number.

It is an amenable number.

12102621 is a deficient number, since it is larger than the sum of its proper divisors (4034211).

12102621 is an equidigital number, since it uses as much as digits as its factorization.

12102621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4034210.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 12102621 is about 3478.8821480470. The cubic root of 12102621 is about 229.5936176177.

Adding to 12102621 its reverse (12620121), we get a palindrome (24722742).

The spelling of 12102621 in words is "twelve million, one hundred two thousand, six hundred twenty-one".