221102111202223 has 4 divisors (see below), whose sum is σ = 221102140947480. Its totient is φ = 221102081456968.

The previous prime is 221102111202197. The next prime is 221102111202233. The reversal of 221102111202223 is 322202111201122.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 221102111202223 - 2⁵ = 221102111202191 is a prime.

It is a super-2 number, since 2×221102111202223² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221102111202194 and 221102111202203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221102111202233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6978993 + ... + 22156501.

It is an arithmetic number, because the mean of its divisors is an integer number (55275535236870).

Almost surely, 2^{221102111202223} is an apocalyptic number.

221102111202223 is a deficient number, since it is larger than the sum of its proper divisors (29745257).

221102111202223 is a wasteful number, since it uses less digits than its factorization.

221102111202223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29745256.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 221102111202223 its reverse (322202111201122), we get a palindrome (543304222403345).

The spelling of 221102111202223 in words is "two hundred twenty-one trillion, one hundred two billion, one hundred eleven million, two hundred two thousand, two hundred twenty-three".