2111421443 has 2 divisors, whose sum is σ = 2111421444. Its totient is φ = 2111421442.

The previous prime is 2111421409. The next prime is 2111421461. The reversal of 2111421443 is 3441241112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2111421443 - 2¹⁶ = 2111355907 is a prime.

It is not a weakly prime, because it can be changed into another prime (2111421043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055710721 + 1055710722.

It is an arithmetic number, because the mean of its divisors is an integer number (1055710722).

Almost surely, 2^2111421443 is an apocalyptic number.

2111421443 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111421443 is an equidigital number, since it uses as much as digits as its factorization.

2111421443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 768, while the sum is 23.

The square root of 2111421443 is about 45950.2061257618. The cubic root of 2111421443 is about 1282.8965659050.

Adding to 2111421443 its reverse (3441241112), we get a palindrome (5552662555).

The spelling of 2111421443 in words is "two billion, one hundred eleven million, four hundred twenty-one thousand, four hundred forty-three".