221323020234 has 16 divisors (see below), whose sum is σ = 442726572960. Its totient is φ = 73760918000.

The previous prime is 221323020203. The next prime is 221323020239. The reversal of 221323020234 is 432020323122.

It is a super-3 number, since 3×221323020234³ (a number of 35 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (221323020239) 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, 3319764 + ... + 3385775.

It is an arithmetic number, because the mean of its divisors is an integer number (27670410810).

Almost surely, 2^221323020234 is an apocalyptic number.

221323020234 is an abundant number, since it is smaller than the sum of its proper divisors (221403552726).

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

221323020234 is a wasteful number, since it uses less digits than its factorization.

221323020234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6711045.

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 221323020234 its reverse (432020323122), we get a palindrome (653343343356).

The spelling of 221323020234 in words is "two hundred twenty-one billion, three hundred twenty-three million, twenty thousand, two hundred thirty-four".