2216426204321 has 4 divisors (see below), whose sum is σ = 2533058519232. Its totient is φ = 1899793889412.

The previous prime is 2216426204219. The next prime is 2216426204341. The reversal of 2216426204321 is 1234026246122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2216426204321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2216426204341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158316157445 + ... + 158316157458.

It is an arithmetic number, because the mean of its divisors is an integer number (633264629808).

Almost surely, 2^{2216426204321} is an apocalyptic number.

It is an amenable number.

2216426204321 is a deficient number, since it is larger than the sum of its proper divisors (316632314911).

2216426204321 is an equidigital number, since it uses as much as digits as its factorization.

2216426204321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316632314910.

The product of its (nonzero) digits is 55296, while the sum is 35.

The spelling of 2216426204321 in words is "two trillion, two hundred sixteen billion, four hundred twenty-six million, two hundred four thousand, three hundred twenty-one".