221233332213 has 32 divisors (see below), whose sum is σ = 351246585600. Its totient is φ = 137263439808.

The previous prime is 221233332209. The next prime is 221233332223. The reversal of 221233332213 is 312233332122.

221233332213 is a `hidden beast` number, since 2 + 2 + 1 + 2 + 333 + 322 + 1 + 3 = 666.

It is not a de Polignac number, because 221233332213 - 2² = 221233332209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221233332223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4791258 + ... + 4837211.

It is an arithmetic number, because the mean of its divisors is an integer number (10976455800).

Almost surely, 2^221233332213 is an apocalyptic number.

221233332213 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

221233332213 is a deficient number, since it is larger than the sum of its proper divisors (130013253387).

221233332213 is a wasteful number, since it uses less digits than its factorization.

221233332213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9628538 (or 9628532 counting only the distinct ones).

The product of its digits is 7776, while the sum is 27.

Adding to 221233332213 its reverse (312233332122), we get a palindrome (533466664335).

Subtracting 221233332213 from its reverse (312233332122), we obtain a palindrome (90999999909).

The spelling of 221233332213 in words is "two hundred twenty-one billion, two hundred thirty-three million, three hundred thirty-two thousand, two hundred thirteen".