11195121 has 16 divisors (see below), whose sum is σ = 17132544. Its totient is φ = 6369744.

The previous prime is 11195117. The next prime is 11195141. The reversal of 11195121 is 12159111.

It is not a de Polignac number, because 11195121 - 2² = 11195117 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (11195141) 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 15 ways as a sum of consecutive naturals, for example, 4510 + ... + 6536.

It is an arithmetic number, because the mean of its divisors is an integer number (1070784).

Almost surely, 2^11195121 is an apocalyptic number.

It is an amenable number.

11195121 is a deficient number, since it is larger than the sum of its proper divisors (5937423).

11195121 is a wasteful number, since it uses less digits than its factorization.

11195121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2300.

The product of its digits is 90, while the sum is 21.

The square root of 11195121 is about 3345.9110866848. The cubic root of 11195121 is about 223.7052951062.

The spelling of 11195121 in words is "eleven million, one hundred ninety-five thousand, one hundred twenty-one".