13212407 has 4 divisors (see below), whose sum is σ = 14228760. Its totient is φ = 12196056.

The previous prime is 13212403. The next prime is 13212413. The reversal of 13212407 is 70421231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70421231 = 41 ⋅1717591.

It is a cyclic number.

It is not a de Polignac number, because 13212407 - 2² = 13212403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13212403) 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, 508157 + ... + 508182.

It is an arithmetic number, because the mean of its divisors is an integer number (3557190).

Almost surely, 2^13212407 is an apocalyptic number.

13212407 is a deficient number, since it is larger than the sum of its proper divisors (1016353).

13212407 is a wasteful number, since it uses less digits than its factorization.

13212407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016352.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 13212407 is about 3634.8874810646. The cubic root of 13212407 is about 236.4071719924.

Adding to 13212407 its reverse (70421231), we get a palindrome (83633638).

The spelling of 13212407 in words is "thirteen million, two hundred twelve thousand, four hundred seven".