11213507 has 4 divisors (see below), whose sum is σ = 11322480. Its totient is φ = 11104536.

The previous prime is 11213471. The next prime is 11213509. The reversal of 11213507 is 70531211.

11213507 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70531211 = 19 ⋅3712169.

It is a cyclic number.

It is not a de Polignac number, because 11213507 - 2¹⁸ = 10951363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11213509) 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, 54332 + ... + 54537.

It is an arithmetic number, because the mean of its divisors is an integer number (2830620).

Almost surely, 2^11213507 is an apocalyptic number.

11213507 is a deficient number, since it is larger than the sum of its proper divisors (108973).

11213507 is a wasteful number, since it uses less digits than its factorization.

11213507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108972.

The product of its (nonzero) digits is 210, while the sum is 20.

The square root of 11213507 is about 3348.6574921900. The cubic root of 11213507 is about 223.8276935438.

Adding to 11213507 its reverse (70531211), we get a palindrome (81744718).

The spelling of 11213507 in words is "eleven million, two hundred thirteen thousand, five hundred seven".