11219421 has 8 divisors (see below), whose sum is σ = 15035200. Its totient is φ = 7441632.

The previous prime is 11219419. The next prime is 11219437. The reversal of 11219421 is 12491211.

It is a happy number.

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

It is not a de Polignac number, because 11219421 - 2¹ = 11219419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11219401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8800 + ... + 9993.

It is an arithmetic number, because the mean of its divisors is an integer number (1879400).

Almost surely, 2^11219421 is an apocalyptic number.

It is an amenable number.

11219421 is a deficient number, since it is larger than the sum of its proper divisors (3815779).

11219421 is a wasteful number, since it uses less digits than its factorization.

11219421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18995.

The product of its digits is 144, while the sum is 21.

The square root of 11219421 is about 3349.5404162362. The cubic root of 11219421 is about 223.8670355129.

The spelling of 11219421 in words is "eleven million, two hundred nineteen thousand, four hundred twenty-one".