11741221 has 4 divisors (see below), whose sum is σ = 12359200. Its totient is φ = 11123244.

The previous prime is 11741189. The next prime is 11741227. The reversal of 11741221 is 12214711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12214711 = 59 ⋅207029.

It is a cyclic number.

It is not a de Polignac number, because 11741221 - 2⁵ = 11741189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 617959 = 11741221 / (1 + 1 + 7 + 4 + 1 + 2 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11741227) 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, 308961 + ... + 308998.

It is an arithmetic number, because the mean of its divisors is an integer number (3089800).

Almost surely, 2^11741221 is an apocalyptic number.

It is an amenable number.

11741221 is a deficient number, since it is larger than the sum of its proper divisors (617979).

11741221 is an equidigital number, since it uses as much as digits as its factorization.

11741221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617978.

The product of its digits is 112, while the sum is 19.

The square root of 11741221 is about 3426.5465121606. The cubic root of 11741221 is about 227.2851636879.

Adding to 11741221 its reverse (12214711), we get a palindrome (23955932).

The spelling of 11741221 in words is "eleven million, seven hundred forty-one thousand, two hundred twenty-one".