221312331334 has 4 divisors (see below), whose sum is σ = 331968497004. Its totient is φ = 110656165666.

The previous prime is 221312331311. The next prime is 221312331337. The reversal of 221312331334 is 433133213122.

221312331334 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221312331337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55328082832 + ... + 55328082835.

It is an arithmetic number, because the mean of its divisors is an integer number (82992124251).

Almost surely, 2^221312331334 is an apocalyptic number.

221312331334 is a deficient number, since it is larger than the sum of its proper divisors (110656165670).

221312331334 is a wasteful number, since it uses less digits than its factorization.

221312331334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110656165669.

The product of its digits is 7776, while the sum is 28.

Adding to 221312331334 its reverse (433133213122), we get a palindrome (654445544456).

The spelling of 221312331334 in words is "two hundred twenty-one billion, three hundred twelve million, three hundred thirty-one thousand, three hundred thirty-four".