221419 has 4 divisors (see below), whose sum is σ = 241560. Its totient is φ = 201280.

The previous prime is 221413. The next prime is 221447. The reversal of 221419 is 914122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221419 - 2³ = 221411 is a prime.

It is a super-2 number, since 2×221419² = 98052747122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221396 and 221405.

It is not an unprimeable number, because it can be changed into a prime (221411) 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, 10054 + ... + 10075.

It is an arithmetic number, because the mean of its divisors is an integer number (60390).

2²²¹⁴¹⁹ is an apocalyptic number.

221419 is a deficient number, since it is larger than the sum of its proper divisors (20141).

221419 is a wasteful number, since it uses less digits than its factorization.

221419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20140.

The product of its digits is 144, while the sum is 19.

The square root of 221419 is about 470.5518037368. The cubic root of 221419 is about 60.4976207429.

It can be divided in two parts, 22 and 1419, that added together give a palindrome (1441).

The spelling of 221419 in words is "two hundred twenty-one thousand, four hundred nineteen".