1105121443 has 2 divisors, whose sum is σ = 1105121444. Its totient is φ = 1105121442.

The previous prime is 1105121429. The next prime is 1105121447. The reversal of 1105121443 is 3441215011.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1105121443 - 2²⁹ = 568250531 is a prime.

It is not a weakly prime, because it can be changed into another prime (1105121447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 552560721 + 552560722.

It is an arithmetic number, because the mean of its divisors is an integer number (552560722).

Almost surely, 2^1105121443 is an apocalyptic number.

1105121443 is a deficient number, since it is larger than the sum of its proper divisors (1).

1105121443 is an equidigital number, since it uses as much as digits as its factorization.

1105121443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 1105121443 is about 33243.3669022859. The cubic root of 1105121443 is about 1033.8796851904.

Adding to 1105121443 its reverse (3441215011), we get a palindrome (4546336454).

The spelling of 1105121443 in words is "one billion, one hundred five million, one hundred twenty-one thousand, four hundred forty-three".