2211664043 has 4 divisors (see below), whose sum is σ = 2213883360. Its totient is φ = 2209444728.

The previous prime is 2211664027. The next prime is 2211664051. The reversal of 2211664043 is 3404661122.

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

It is a cyclic number.

It is not a de Polignac number, because 2211664043 - 2⁴ = 2211664027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2211663997 and 2211664015.

It is not an unprimeable number, because it can be changed into a prime (2211664003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1108163 + ... + 1110156.

It is an arithmetic number, because the mean of its divisors is an integer number (553470840).

Almost surely, 2^2211664043 is an apocalyptic number.

2211664043 is a deficient number, since it is larger than the sum of its proper divisors (2219317).

2211664043 is an equidigital number, since it uses as much as digits as its factorization.

2211664043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2219316.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 2211664043 is about 47028.3323433864. The cubic root of 2211664043 is about 1302.8859049350.

The spelling of 2211664043 in words is "two billion, two hundred eleven million, six hundred sixty-four thousand, forty-three".