1220201011223 has 2 divisors, whose sum is σ = 1220201011224. Its totient is φ = 1220201011222.

The previous prime is 1220201011213. The next prime is 1220201011261. The reversal of 1220201011223 is 3221101020221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1220201011223 - 2⁸ = 1220201010967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220201011213) 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, 610100505611 + 610100505612.

It is an arithmetic number, because the mean of its divisors is an integer number (610100505612).

Almost surely, 2^{1220201011223} is an apocalyptic number.

1220201011223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220201011223 is an equidigital number, since it uses as much as digits as its factorization.

1220201011223 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 17.

Adding to 1220201011223 its reverse (3221101020221), we get a palindrome (4441302031444).

The spelling of 1220201011223 in words is "one trillion, two hundred twenty billion, two hundred one million, eleven thousand, two hundred twenty-three".