11121657 has 8 divisors (see below), whose sum is σ = 15144576. Its totient is φ = 7256592.

The previous prime is 11121647. The next prime is 11121661. The reversal of 11121657 is 75612111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11121657 - 2¹⁰ = 11120633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11121637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39298 + ... + 39579.

It is an arithmetic number, because the mean of its divisors is an integer number (1893072).

Almost surely, 2^11121657 is an apocalyptic number.

It is an amenable number.

11121657 is a deficient number, since it is larger than the sum of its proper divisors (4022919).

11121657 is an equidigital number, since it uses as much as digits as its factorization.

11121657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78927.

The product of its digits is 420, while the sum is 24.

The square root of 11121657 is about 3334.9148414915. The cubic root of 11121657 is about 223.2148920255.

Adding to 11121657 its reverse (75612111), we get a palindrome (86733768).

The spelling of 11121657 in words is "eleven million, one hundred twenty-one thousand, six hundred fifty-seven".