13122215 has 16 divisors (see below), whose sum is σ = 16759872. Its totient is φ = 9828864.

The previous prime is 13122211. The next prime is 13122227. The reversal of 13122215 is 51222131.

It is a happy number.

13122215 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 13122215 - 2² = 13122211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13122193 and 13122202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13122211) 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, 26702 + ... + 27188.

It is an arithmetic number, because the mean of its divisors is an integer number (1047492).

Almost surely, 2^13122215 is an apocalyptic number.

13122215 is a deficient number, since it is larger than the sum of its proper divisors (3637657).

13122215 is a wasteful number, since it uses less digits than its factorization.

13122215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826.

The product of its digits is 120, while the sum is 17.

The square root of 13122215 is about 3622.4597996389. The cubic root of 13122215 is about 235.8680136734.

Adding to 13122215 its reverse (51222131), we get a palindrome (64344346).

The spelling of 13122215 in words is "thirteen million, one hundred twenty-two thousand, two hundred fifteen".