19114221 has 8 divisors (see below), whose sum is σ = 29126464. Its totient is φ = 10922400.

The previous prime is 19114217. The next prime is 19114223. The reversal of 19114221 is 12241191.

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 19114221 - 2² = 19114217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 910201 = 19114221 / (1 + 9 + 1 + 1 + 4 + 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 (19114223) 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, 455080 + ... + 455121.

It is an arithmetic number, because the mean of its divisors is an integer number (3640808).

Almost surely, 2^19114221 is an apocalyptic number.

It is an amenable number.

19114221 is a deficient number, since it is larger than the sum of its proper divisors (10012243).

19114221 is an equidigital number, since it uses as much as digits as its factorization.

19114221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910211.

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

The square root of 19114221 is about 4371.9813586062. The cubic root of 19114221 is about 267.3738118540.

The spelling of 19114221 in words is "nineteen million, one hundred fourteen thousand, two hundred twenty-one".