12210807 has 16 divisors (see below), whose sum is σ = 19208192. Its totient is φ = 6752160.

The previous prime is 12210791. The next prime is 12210823. The reversal of 12210807 is 70801221.

12210807 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12210791) and next prime (12210823).

It is not a de Polignac number, because 12210807 - 2⁴ = 12210791 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12210857) 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, 8728 + ... + 10029.

It is an arithmetic number, because the mean of its divisors is an integer number (1200512).

Almost surely, 2^12210807 is an apocalyptic number.

12210807 is a deficient number, since it is larger than the sum of its proper divisors (6997385).

12210807 is a wasteful number, since it uses less digits than its factorization.

12210807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18798.

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 12210807 is about 3494.3965144213. The cubic root of 12210807 is about 230.2757059203.

The spelling of 12210807 in words is "twelve million, two hundred ten thousand, eight hundred seven".