221021012203 has 2 divisors, whose sum is σ = 221021012204. Its totient is φ = 221021012202.

The previous prime is 221021012161. The next prime is 221021012249. The reversal of 221021012203 is 302210120122.

It is a happy number.

221021012203 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221021012203 - 2⁹ = 221021011691 is a prime.

It is not a weakly prime, because it can be changed into another prime (221021012503) 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 as a sum of consecutive naturals, namely, 110510506101 + 110510506102.

It is an arithmetic number, because the mean of its divisors is an integer number (110510506102).

Almost surely, 2^221021012203 is an apocalyptic number.

221021012203 is a deficient number, since it is larger than the sum of its proper divisors (1).

221021012203 is an equidigital number, since it uses as much as digits as its factorization.

221021012203 is an odious number, because the sum of its binary digits is odd.

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

Adding to 221021012203 its reverse (302210120122), we get a palindrome (523231132325).

The spelling of 221021012203 in words is "two hundred twenty-one billion, twenty-one million, twelve thousand, two hundred three".