221123234 has 8 divisors (see below), whose sum is σ = 331765200. Its totient is φ = 110534836.

The previous prime is 221123213. The next prime is 221123251. The reversal of 221123234 is 432321122.

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

It is a super-2 number, since 2×221123234² = 97790969229237512, which contains 22 as substring.

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, 644 + ... + 21039.

It is an arithmetic number, because the mean of its divisors is an integer number (41470650).

Almost surely, 2^221123234 is an apocalyptic number.

221123234 is a deficient number, since it is larger than the sum of its proper divisors (110641966).

221123234 is a wasteful number, since it uses less digits than its factorization.

221123234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26784.

The product of its digits is 576, while the sum is 20.

The square root of 221123234 is about 14870.2129776275. The cubic root of 221123234 is about 604.7067166704.

Adding to 221123234 its reverse (432321122), we get a palindrome (653444356).

The spelling of 221123234 in words is "two hundred twenty-one million, one hundred twenty-three thousand, two hundred thirty-four".