221630034 has 8 divisors (see below), whose sum is σ = 443260080. Its totient is φ = 73876676.

The previous prime is 221630023. The next prime is 221630077. The reversal of 221630034 is 430036122.

It is a happy number.

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

221630034 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18469164 + ... + 18469175.

It is an arithmetic number, because the mean of its divisors is an integer number (55407510).

Almost surely, 2^221630034 is an apocalyptic number.

221630034 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

221630034 is a wasteful number, since it uses less digits than its factorization.

221630034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36938344.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 221630034 is about 14887.2440028368. The cubic root of 221630034 is about 605.1683469316.

Adding to 221630034 its reverse (430036122), we get a palindrome (651666156).

The spelling of 221630034 in words is "two hundred twenty-one million, six hundred thirty thousand, thirty-four".