2111354443 has 4 divisors (see below), whose sum is σ = 2303295768. Its totient is φ = 1919413120.

The previous prime is 2111354429. The next prime is 2111354449. The reversal of 2111354443 is 3444531112.

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 2111354443 - 2²¹ = 2109257291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2111354449) 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, 95970646 + ... + 95970667.

It is an arithmetic number, because the mean of its divisors is an integer number (575823942).

Almost surely, 2^2111354443 is an apocalyptic number.

2111354443 is a deficient number, since it is larger than the sum of its proper divisors (191941325).

2111354443 is a wasteful number, since it uses less digits than its factorization.

2111354443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191941324.

The product of its digits is 5760, while the sum is 28.

The square root of 2111354443 is about 45949.4770699298. The cubic root of 2111354443 is about 1282.8829960610.

Adding to 2111354443 its reverse (3444531112), we get a palindrome (5555885555).

The spelling of 2111354443 in words is "two billion, one hundred eleven million, three hundred fifty-four thousand, four hundred forty-three".