221222402303 has 4 divisors (see below), whose sum is σ = 252825602640. Its totient is φ = 189619201968.

The previous prime is 221222402287. The next prime is 221222402389. The reversal of 221222402303 is 303204222122.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 221222402303 - 2⁴ = 221222402287 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221222402393) 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 3 ways as a sum of consecutive naturals, for example, 15801600158 + ... + 15801600171.

It is an arithmetic number, because the mean of its divisors is an integer number (63206400660).

Almost surely, 2^221222402303 is an apocalyptic number.

221222402303 is a deficient number, since it is larger than the sum of its proper divisors (31603200337).

221222402303 is an equidigital number, since it uses as much as digits as its factorization.

221222402303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31603200336.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 221222402303 its reverse (303204222122), we get a palindrome (524426624425).

The spelling of 221222402303 in words is "two hundred twenty-one billion, two hundred twenty-two million, four hundred two thousand, three hundred three".