221332110123 has 16 divisors (see below), whose sum is σ = 300230985600. Its totient is φ = 144995981760.

The previous prime is 221332110119. The next prime is 221332110133. The reversal of 221332110123 is 321011233122.

It is not a de Polignac number, because 221332110123 - 2² = 221332110119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221332110123.

It is not an unprimeable number, because it can be changed into a prime (221332110133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198208 + ... + 694226.

It is an arithmetic number, because the mean of its divisors is an integer number (18764436600).

Almost surely, 2^221332110123 is an apocalyptic number.

221332110123 is a deficient number, since it is larger than the sum of its proper divisors (78898875477).

221332110123 is a wasteful number, since it uses less digits than its factorization.

221332110123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498602.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 221332110123 its reverse (321011233122), we get a palindrome (542343343245).

The spelling of 221332110123 in words is "two hundred twenty-one billion, three hundred thirty-two million, one hundred ten thousand, one hundred twenty-three".