11421371 has 4 divisors (see below), whose sum is σ = 12299952. Its totient is φ = 10542792.

The previous prime is 11421367. The next prime is 11421379. The reversal of 11421371 is 17312411.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17312411 = 37 ⋅467903.

It is not a de Polignac number, because 11421371 - 2² = 11421367 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11421379) 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, 439271 + ... + 439296.

It is an arithmetic number, because the mean of its divisors is an integer number (3074988).

Almost surely, 2^11421371 is an apocalyptic number.

11421371 is a deficient number, since it is larger than the sum of its proper divisors (878581).

11421371 is an equidigital number, since it uses as much as digits as its factorization.

11421371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878580.

The product of its digits is 168, while the sum is 20.

The square root of 11421371 is about 3379.5518933728. The cubic root of 11421371 is about 225.2022609240.

Adding to 11421371 its reverse (17312411), we get a palindrome (28733782).

The spelling of 11421371 in words is "eleven million, four hundred twenty-one thousand, three hundred seventy-one".