221012012203 has 8 divisors (see below), whose sum is σ = 229503956976. Its totient is φ = 212667753600.

The previous prime is 221012012161. The next prime is 221012012261. The reversal of 221012012203 is 302210210122.

It is a happy number.

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 221012012203 - 2¹³ = 221012004011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221012012003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36918493 + ... + 36924478.

It is an arithmetic number, because the mean of its divisors is an integer number (28687994622).

Almost surely, 2^221012012203 is an apocalyptic number.

221012012203 is a deficient number, since it is larger than the sum of its proper divisors (8491944773).

221012012203 is an equidigital number, since it uses as much as digits as its factorization.

221012012203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73843085.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 221012012203 its reverse (302210210122), we get a palindrome (523222222325).

The spelling of 221012012203 in words is "two hundred twenty-one billion, twelve million, twelve thousand, two hundred three".