221301132234 has 128 divisors (see below), whose sum is σ = 583789731840. Its totient is φ = 54318553344.

The previous prime is 221301132223. The next prime is 221301132329. The reversal of 221301132234 is 432231103122.

221301132234 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×221301132234² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 226507 + ... + 702785.

It is an arithmetic number, because the mean of its divisors is an integer number (4560857280).

Almost surely, 2^221301132234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221301132234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291894865920).

221301132234 is an abundant number, since it is smaller than the sum of its proper divisors (362488599606).

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

221301132234 is a wasteful number, since it uses less digits than its factorization.

221301132234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476364.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 221301132234 its reverse (432231103122), we get a palindrome (653532235356).

The spelling of 221301132234 in words is "two hundred twenty-one billion, three hundred one million, one hundred thirty-two thousand, two hundred thirty-four".