221221231000234 has 16 divisors (see below), whose sum is σ = 333000529555680. Its totient is φ = 110221388156880.

The previous prime is 221221231000193. The next prime is 221221231000247. The reversal of 221221231000234 is 432000132122122.

It is a super-2 number, since 2×221221231000234² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221221231000199 and 221221231000208.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82091649 + ... + 84743620.

It is an arithmetic number, because the mean of its divisors is an integer number (20812533097230).

Almost surely, 2^{221221231000234} is an apocalyptic number.

221221231000234 is a deficient number, since it is larger than the sum of its proper divisors (111779298555446).

221221231000234 is a wasteful number, since it uses less digits than its factorization.

221221231000234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166837605.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 221221231000234 its reverse (432000132122122), we get a palindrome (653221363122356).

The spelling of 221221231000234 in words is "two hundred twenty-one trillion, two hundred twenty-one billion, two hundred thirty-one million, two hundred thirty-four", and thus it is an aban number.