221045334 has 16 divisors (see below), whose sum is σ = 449338800. Its totient is φ = 72473760.

The previous prime is 221045333. The next prime is 221045359. The reversal of 221045334 is 433540122.

221045334 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 a super-2 number, since 2×221045334² = 97722079366343112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221045333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 301609 + ... + 302340.

It is an arithmetic number, because the mean of its divisors is an integer number (28083675).

Almost surely, 2^221045334 is an apocalyptic number.

221045334 is an abundant number, since it is smaller than the sum of its proper divisors (228293466).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221045334 is a wasteful number, since it uses less digits than its factorization.

221045334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604015.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 221045334 is about 14867.5934165554. The cubic root of 221045334 is about 604.6356971680.

Adding to 221045334 its reverse (433540122), we get a palindrome (654585456).

The spelling of 221045334 in words is "two hundred twenty-one million, forty-five thousand, three hundred thirty-four".