11121607 has 4 divisors (see below), whose sum is σ = 12710416. Its totient is φ = 9532800.

The previous prime is 11121601. The next prime is 11121611. The reversal of 11121607 is 70612111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11121607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121601) 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, 794394 + ... + 794407.

It is an arithmetic number, because the mean of its divisors is an integer number (3177604).

Almost surely, 2^11121607 is an apocalyptic number.

11121607 is a deficient number, since it is larger than the sum of its proper divisors (1588809).

11121607 is an equidigital number, since it uses as much as digits as its factorization.

11121607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1588808.

The product of its (nonzero) digits is 84, while the sum is 19.

The square root of 11121607 is about 3334.9073450397. The cubic root of 11121607 is about 223.2145575201.

Adding to 11121607 its reverse (70612111), we get a palindrome (81733718).

The spelling of 11121607 in words is "eleven million, one hundred twenty-one thousand, six hundred seven".