221884373 has 4 divisors (see below), whose sum is σ = 222336768. Its totient is φ = 221431980.

The previous prime is 221884363. The next prime is 221884417. The reversal of 221884373 is 373488122.

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.

It is a cyclic number.

It is not a de Polignac number, because 221884373 - 2¹⁸ = 221622229 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 (221884363) 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, 225461 + ... + 226442.

It is an arithmetic number, because the mean of its divisors is an integer number (55584192).

Almost surely, 2^221884373 is an apocalyptic number.

It is an amenable number.

221884373 is a deficient number, since it is larger than the sum of its proper divisors (452395).

221884373 is an equidigital number, since it uses as much as digits as its factorization.

221884373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452394.

The product of its digits is 64512, while the sum is 38.

The square root of 221884373 is about 14895.7837323184. The cubic root of 221884373 is about 605.3997521989.

The spelling of 221884373 in words is "two hundred twenty-one million, eight hundred eighty-four thousand, three hundred seventy-three".