221303034 has 24 divisors (see below), whose sum is σ = 479773632. Its totient is φ = 73724040.

The previous prime is 221303009. The next prime is 221303063. The reversal of 221303034 is 430303122.

221303034 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 221302998 and 221303016.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45777 + ... + 50379.

It is an arithmetic number, because the mean of its divisors is an integer number (19990568).

Almost surely, 2^221303034 is an apocalyptic number.

221303034 is an abundant number, since it is smaller than the sum of its proper divisors (258470598).

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

221303034 is a wasteful number, since it uses less digits than its factorization.

221303034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7282 (or 7279 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 221303034 is about 14876.2573922341. The cubic root of 221303034 is about 604.8705722269.

Adding to 221303034 its reverse (430303122), we get a palindrome (651606156).

The spelling of 221303034 in words is "two hundred twenty-one million, three hundred three thousand, thirty-four".