2111534443 has 2 divisors, whose sum is σ = 2111534444. Its totient is φ = 2111534442.

The previous prime is 2111534371. The next prime is 2111534471. The reversal of 2111534443 is 3444351112.

It is an a-pointer prime, because the next prime (2111534471) can be obtained adding 2111534443 to its sum of digits (28).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2111534443 is a prime.

It is not a weakly prime, because it can be changed into another prime (2111534743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055767221 + 1055767222.

It is an arithmetic number, because the mean of its divisors is an integer number (1055767222).

Almost surely, 2^2111534443 is an apocalyptic number.

2111534443 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111534443 is an equidigital number, since it uses as much as digits as its factorization.

2111534443 is an evil number, because the sum of its binary digits is even.

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

The square root of 2111534443 is about 45951.4357011835. The cubic root of 2111534443 is about 1282.9194517081.

Adding to 2111534443 its reverse (3444351112), we get a palindrome (5555885555).

The spelling of 2111534443 in words is "two billion, one hundred eleven million, five hundred thirty-four thousand, four hundred forty-three".