1121403403 has 2 divisors, whose sum is σ = 1121403404. Its totient is φ = 1121403402.

The previous prime is 1121403401. The next prime is 1121403431. The reversal of 1121403403 is 3043041211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1121403403 - 2¹ = 1121403401 is a prime.

Together with 1121403401, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1121403401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560701701 + 560701702.

It is an arithmetic number, because the mean of its divisors is an integer number (560701702).

Almost surely, 2^1121403403 is an apocalyptic number.

1121403403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121403403 is an equidigital number, since it uses as much as digits as its factorization.

1121403403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1121403403 is about 33487.3618399539. The cubic root of 1121403403 is about 1038.9323989547.

Adding to 1121403403 its reverse (3043041211), we get a palindrome (4164444614).

The spelling of 1121403403 in words is "one billion, one hundred twenty-one million, four hundred three thousand, four hundred three".