221331213203 has 8 divisors (see below), whose sum is σ = 226844815680. Its totient is φ = 215851128640.

The previous prime is 221331213163. The next prime is 221331213241. The reversal of 221331213203 is 302312133122.

221331213203 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221331213203 - 2¹² = 221331209107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221331212203) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 8366108 + ... + 8392521.

It is an arithmetic number, because the mean of its divisors is an integer number (28355601960).

Almost surely, 2^221331213203 is an apocalyptic number.

221331213203 is a deficient number, since it is larger than the sum of its proper divisors (5513602477).

221331213203 is a wasteful number, since it uses less digits than its factorization.

221331213203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16758957.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 221331213203 its reverse (302312133122), we get a palindrome (523643346325).

The spelling of 221331213203 in words is "two hundred twenty-one billion, three hundred thirty-one million, two hundred thirteen thousand, two hundred three".