1121063903 has 4 divisors (see below), whose sum is σ = 1121137248. Its totient is φ = 1120990560.

The previous prime is 1121063893. The next prime is 1121063921. The reversal of 1121063903 is 3093601211.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1121063903 - 2⁴ = 1121063887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121063003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4103 + ... + 47528.

It is an arithmetic number, because the mean of its divisors is an integer number (280284312).

Almost surely, 2^1121063903 is an apocalyptic number.

1121063903 is a deficient number, since it is larger than the sum of its proper divisors (73345).

1121063903 is an equidigital number, since it uses as much as digits as its factorization.

1121063903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73344.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 1121063903 is about 33482.2923797042. The cubic root of 1121063903 is about 1038.8275442851.

The spelling of 1121063903 in words is "one billion, one hundred twenty-one million, sixty-three thousand, nine hundred three".