2211116639 has 4 divisors (see below), whose sum is σ = 2218930056. Its totient is φ = 2203303224.

The previous prime is 2211116603. The next prime is 2211116651. The reversal of 2211116639 is 9366111122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9366111122 = 2 ⋅4683055561.

It is a cyclic number.

It is not a de Polignac number, because 2211116639 - 2²⁴ = 2194339423 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 (2211116669) 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 in 3 ways as a sum of consecutive naturals, for example, 3906284 + ... + 3906849.

It is an arithmetic number, because the mean of its divisors is an integer number (554732514).

Almost surely, 2^2211116639 is an apocalyptic number.

2211116639 is a deficient number, since it is larger than the sum of its proper divisors (7813417).

2211116639 is an equidigital number, since it uses as much as digits as its factorization.

2211116639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7813416.

The product of its digits is 3888, while the sum is 32.

The square root of 2211116639 is about 47022.5120447643. The cubic root of 2211116639 is about 1302.7784046108.

The spelling of 2211116639 in words is "two billion, two hundred eleven million, one hundred sixteen thousand, six hundred thirty-nine".