221222103 has 16 divisors (see below), whose sum is σ = 297198720. Its totient is φ = 146368736.

The previous prime is 221222087. The next prime is 221222123. The reversal of 221222103 is 301222122.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 221222103 - 2⁴ = 221222087 is a prime.

It is a super-3 number, since 3×221222103³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221222123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 376576 + ... + 377162.

It is an arithmetic number, because the mean of its divisors is an integer number (18574920).

Almost surely, 2^221222103 is an apocalyptic number.

221222103 is a deficient number, since it is larger than the sum of its proper divisors (75976617).

221222103 is a wasteful number, since it uses less digits than its factorization.

221222103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1326.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 221222103 is about 14873.5370036854. The cubic root of 221222103 is about 604.7968290764.

Adding to 221222103 its reverse (301222122), we get a palindrome (522444225).

The spelling of 221222103 in words is "two hundred twenty-one million, two hundred twenty-two thousand, one hundred three".