221212314343134 has 24 divisors (see below), whose sum is σ = 481701857036400. Its totient is φ = 73366898223168.

The previous prime is 221212314343123. The next prime is 221212314343157. The reversal of 221212314343134 is 431343413212122.

221212314343134 is a `hidden beast` number, since 2 + 2 + 1 + 21 + 2 + 314 + 3 + 4 + 313 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30878320587 + ... + 30878327750.

It is an arithmetic number, because the mean of its divisors is an integer number (20070910709850).

Almost surely, 2^{221212314343134} is an apocalyptic number.

221212314343134 is an abundant number, since it is smaller than the sum of its proper divisors (260489542693266).

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

221212314343134 is a wasteful number, since it uses less digits than its factorization.

221212314343134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61756648544 (or 61756648541 counting only the distinct ones).

The product of its digits is 82944, while the sum is 36.

Adding to 221212314343134 its reverse (431343413212122), we get a palindrome (652555727555256).

The spelling of 221212314343134 in words is "two hundred twenty-one trillion, two hundred twelve billion, three hundred fourteen million, three hundred forty-three thousand, one hundred thirty-four".