221001220000223 has 72 divisors (see below), whose sum is σ = 254362797889200. Its totient is φ = 190838691348480.

The previous prime is 221001220000207. The next prime is 221001220000243. The reversal of 221001220000223 is 322000022100122.

It is not a de Polignac number, because 221001220000223 - 2⁴ = 221001220000207 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221001220000243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 387042416528 + ... + 387042417098.

It is an arithmetic number, because the mean of its divisors is an integer number (3532816637350).

Almost surely, 2^{221001220000223} is an apocalyptic number.

221001220000223 is a deficient number, since it is larger than the sum of its proper divisors (33361577888977).

221001220000223 is an equidigital number, since it uses as much as digits as its factorization.

221001220000223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2025 (or 1529 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 221001220000223 its reverse (322000022100122), we get a palindrome (543001242100345).

The spelling of 221001220000223 in words is "two hundred twenty-one trillion, one billion, two hundred twenty million, two hundred twenty-three", and thus it is an aban number.