221234263 has 8 divisors (see below), whose sum is σ = 231009408. Its totient is φ = 211472184.

The previous prime is 221234261. The next prime is 221234267. The reversal of 221234263 is 362432122.

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

It is a cyclic number.

It is not a de Polignac number, because 221234263 - 2¹ = 221234261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221234261) 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, 50020 + ... + 54262.

It is an arithmetic number, because the mean of its divisors is an integer number (28876176).

Almost surely, 2^221234263 is an apocalyptic number.

221234263 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

221234263 is a deficient number, since it is larger than the sum of its proper divisors (9775145).

221234263 is a wasteful number, since it uses less digits than its factorization.

221234263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6533.

The product of its digits is 3456, while the sum is 25.

The square root of 221234263 is about 14873.9457777686. The cubic root of 221234263 is about 604.8079102396.

Adding to 221234263 its reverse (362432122), we get a palindrome (583666385).

The spelling of 221234263 in words is "two hundred twenty-one million, two hundred thirty-four thousand, two hundred sixty-three".