221553130 has 32 divisors (see below), whose sum is σ = 407773440. Its totient is φ = 86648640.

The previous prime is 221553113. The next prime is 221553131. The reversal of 221553130 is 31355122.

221553130 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (221553131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83220 + ... + 85840.

It is an arithmetic number, because the mean of its divisors is an integer number (12742920).

Almost surely, 2^221553130 is an apocalyptic number.

221553130 is a deficient number, since it is larger than the sum of its proper divisors (186220310).

221553130 is a wasteful number, since it uses less digits than its factorization.

221553130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2814.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 221553130 is about 14884.6608963725. The cubic root of 221553130 is about 605.0983425046.

The spelling of 221553130 in words is "two hundred twenty-one million, five hundred fifty-three thousand, one hundred thirty".