221113301212 has 6 divisors (see below), whose sum is σ = 386948277128. Its totient is φ = 110556650604.

The previous prime is 221113301207. The next prime is 221113301219. The reversal of 221113301212 is 212103311122.

It is a self number, because there is not a number n which added to its sum of digits gives 221113301212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221113301219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27639162648 + ... + 27639162655.

Almost surely, 2^221113301212 is an apocalyptic number.

It is an amenable number.

221113301212 is a deficient number, since it is larger than the sum of its proper divisors (165834975916).

221113301212 is a wasteful number, since it uses less digits than its factorization.

221113301212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55278325307 (or 55278325305 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 221113301212 its reverse (212103311122), we get a palindrome (433216612334).

The spelling of 221113301212 in words is "two hundred twenty-one billion, one hundred thirteen million, three hundred one thousand, two hundred twelve".