2216390401 has 4 divisors (see below), whose sum is σ = 2253956400. Its totient is φ = 2178824404.

The previous prime is 2216390399. The next prime is 2216390443. The reversal of 2216390401 is 1040936122.

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 not a de Polignac number, because 2216390401 - 2¹ = 2216390399 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2216390401.

It is not an unprimeable number, because it can be changed into a prime (2216390471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18782911 + ... + 18783028.

It is an arithmetic number, because the mean of its divisors is an integer number (563489100).

Almost surely, 2^2216390401 is an apocalyptic number.

It is an amenable number.

2216390401 is a deficient number, since it is larger than the sum of its proper divisors (37565999).

2216390401 is an equidigital number, since it uses as much as digits as its factorization.

2216390401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37565998.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 2216390401 is about 47078.5556384220. Note that the first 3 decimals coincide. The cubic root of 2216390401 is about 1303.8133399326.

The spelling of 2216390401 in words is "two billion, two hundred sixteen million, three hundred ninety thousand, four hundred one".