221130398 has 8 divisors (see below), whose sum is σ = 349153320. Its totient is φ = 104745960.

The previous prime is 221130397. The next prime is 221130433. The reversal of 221130398 is 893031122.

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 221130398.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221130397) 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, 2909573 + ... + 2909648.

It is an arithmetic number, because the mean of its divisors is an integer number (43644165).

Almost surely, 2^221130398 is an apocalyptic number.

221130398 is a deficient number, since it is larger than the sum of its proper divisors (128022922).

221130398 is a wasteful number, since it uses less digits than its factorization.

221130398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5819242.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 221130398 is about 14870.4538599197. The cubic root of 221130398 is about 604.7132470743.

The spelling of 221130398 in words is "two hundred twenty-one million, one hundred thirty thousand, three hundred ninety-eight".