1111521043 has 2 divisors, whose sum is σ = 1111521044. Its totient is φ = 1111521042.

The previous prime is 1111521031. The next prime is 1111521053. The reversal of 1111521043 is 3401251111.

It is a strong prime.

It is an emirp because it is prime and its reverse (3401251111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1111521043 - 2⁵ = 1111521011 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1111521043.

It is not a weakly prime, because it can be changed into another prime (1111521053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555760521 + 555760522.

It is an arithmetic number, because the mean of its divisors is an integer number (555760522).

Almost surely, 2^1111521043 is an apocalyptic number.

1111521043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111521043 is an equidigital number, since it uses as much as digits as its factorization.

1111521043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 1111521043 is about 33339.4817446222. The cubic root of 1111521043 is about 1035.8715283590.

Adding to 1111521043 its reverse (3401251111), we get a palindrome (4512772154).

The spelling of 1111521043 in words is "one billion, one hundred eleven million, five hundred twenty-one thousand, forty-three".