1113121043 has 2 divisors, whose sum is σ = 1113121044. Its totient is φ = 1113121042.

The previous prime is 1113121033. The next prime is 1113121067. The reversal of 1113121043 is 3401213111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1113121043 - 2¹⁴ = 1113104659 is a prime.

It is not a weakly prime, because it can be changed into another prime (1113121003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556560521 + 556560522.

It is an arithmetic number, because the mean of its divisors is an integer number (556560522).

Almost surely, 2^1113121043 is an apocalyptic number.

1113121043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1113121043 is an equidigital number, since it uses as much as digits as its factorization.

1113121043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1113121043 is about 33363.4686895712. The cubic root of 1113121043 is about 1036.3683250189.

Adding to 1113121043 its reverse (3401213111), we get a palindrome (4514334154).

The spelling of 1113121043 in words is "one billion, one hundred thirteen million, one hundred twenty-one thousand, forty-three".