11921193 has 6 divisors (see below), whose sum is σ = 17219514. Its totient is φ = 7947456.

The previous prime is 11921183. The next prime is 11921197. The reversal of 11921193 is 39112911.

It can be written as a sum of positive squares in only one way, i.e., 6290064 + 5631129 = 2508^2 + 2373^2 .

It is not a de Polignac number, because 11921193 - 2⁴ = 11921177 is a prime.

It is a super-2 number, since 2×11921193² = 284229685086498, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11921197) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 662280 + ... + 662297.

It is an arithmetic number, because the mean of its divisors is an integer number (2869919).

Almost surely, 2^11921193 is an apocalyptic number.

It is an amenable number.

11921193 is a deficient number, since it is larger than the sum of its proper divisors (5298321).

11921193 is a wasteful number, since it uses less digits than its factorization.

11921193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1324583 (or 1324580 counting only the distinct ones).

The product of its digits is 486, while the sum is 27.

The square root of 11921193 is about 3452.7080675898. The cubic root of 11921193 is about 228.4405724025.

It can be divided in two parts, 119 and 21193, that added together give a palindrome (21312).

The spelling of 11921193 in words is "eleven million, nine hundred twenty-one thousand, one hundred ninety-three".