11121897 has 8 divisors (see below), whose sum is σ = 15609760. Its totient is φ = 7024320.

The previous prime is 11121883. The next prime is 11121919. The reversal of 11121897 is 79812111.

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

It is not a de Polignac number, because 11121897 - 2⁴ = 11121881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11121197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97504 + ... + 97617.

It is an arithmetic number, because the mean of its divisors is an integer number (1951220).

Almost surely, 2^11121897 is an apocalyptic number.

It is an amenable number.

11121897 is a deficient number, since it is larger than the sum of its proper divisors (4487863).

11121897 is a wasteful number, since it uses less digits than its factorization.

11121897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195143.

The product of its digits is 1008, while the sum is 30.

The square root of 11121897 is about 3334.9508242251. The cubic root of 11121897 is about 223.2164976372.

The spelling of 11121897 in words is "eleven million, one hundred twenty-one thousand, eight hundred ninety-seven".