1220221110223 has 2 divisors, whose sum is σ = 1220221110224. Its totient is φ = 1220221110222.

The previous prime is 1220221110169. The next prime is 1220221110233. The reversal of 1220221110223 is 3220111220221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220221110223 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1220221110223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220221110233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610110555111 + 610110555112.

It is an arithmetic number, because the mean of its divisors is an integer number (610110555112).

Almost surely, 2^{1220221110223} is an apocalyptic number.

1220221110223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220221110223 is an equidigital number, since it uses as much as digits as its factorization.

1220221110223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 1220221110223 its reverse (3220111220221), we get a palindrome (4440332330444).

The spelling of 1220221110223 in words is "one trillion, two hundred twenty billion, two hundred twenty-one million, one hundred ten thousand, two hundred twenty-three".