11221401 has 8 divisors (see below), whose sum is σ = 15612480. Its totient is φ = 7155632.

The previous prime is 11221393. The next prime is 11221417. The reversal of 11221401 is 10412211.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 11221401 - 2³ = 11221393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11221451) 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, 81246 + ... + 81383.

It is an arithmetic number, because the mean of its divisors is an integer number (1951560).

Almost surely, 2^11221401 is an apocalyptic number.

It is an amenable number.

11221401 is a deficient number, since it is larger than the sum of its proper divisors (4391079).

11221401 is a wasteful number, since it uses less digits than its factorization.

11221401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162655.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 11221401 is about 3349.8359661333. The cubic root of 11221401 is about 223.8802040670.

Adding to 11221401 its reverse (10412211), we get a palindrome (21633612).

The spelling of 11221401 in words is "eleven million, two hundred twenty-one thousand, four hundred one".