221096398 has 8 divisors (see below), whose sum is σ = 331708608. Its totient is φ = 110526864.

The previous prime is 221096321. The next prime is 221096399. The reversal of 221096398 is 893690122.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 221096398.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221096399) 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, 11490 + ... + 23962.

It is an arithmetic number, because the mean of its divisors is an integer number (41463576).

Almost surely, 2^221096398 is an apocalyptic number.

221096398 is a deficient number, since it is larger than the sum of its proper divisors (110612210).

221096398 is a wasteful number, since it uses less digits than its factorization.

221096398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21338.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 221096398 is about 14869.3106094398. The cubic root of 221096398 is about 604.6822528368.

The spelling of 221096398 in words is "two hundred twenty-one million, ninety-six thousand, three hundred ninety-eight".