221001211199999 has 4 divisors (see below), whose sum is σ = 221005377078600. Its totient is φ = 220997045321400.

The previous prime is 221001211199987. The next prime is 221001211200043. The reversal of 221001211199999 is 999991112100122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221001211199999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221001211199399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2082859724 + ... + 2082965825.

It is an arithmetic number, because the mean of its divisors is an integer number (55251344269650).

Almost surely, 2^{221001211199999} is an apocalyptic number.

221001211199999 is a deficient number, since it is larger than the sum of its proper divisors (4165878601).

221001211199999 is an equidigital number, since it uses as much as digits as its factorization.

221001211199999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4165878600.

The product of its (nonzero) digits is 472392, while the sum is 56.

The spelling of 221001211199999 in words is "two hundred twenty-one trillion, one billion, two hundred eleven million, one hundred ninety-nine thousand, nine hundred ninety-nine".