1121055203 has 4 divisors (see below), whose sum is σ = 1128195840. Its totient is φ = 1113914568.

The previous prime is 1121055197. The next prime is 1121055239. The reversal of 1121055203 is 3025501211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121055203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121055253) 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, 3570083 + ... + 3570396.

It is an arithmetic number, because the mean of its divisors is an integer number (282048960).

Almost surely, 2^1121055203 is an apocalyptic number.

1121055203 is a deficient number, since it is larger than the sum of its proper divisors (7140637).

1121055203 is an equidigital number, since it uses as much as digits as its factorization.

1121055203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7140636.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 1121055203 is about 33482.1624600324. The cubic root of 1121055203 is about 1038.8248570095.

Adding to 1121055203 its reverse (3025501211), we get a palindrome (4146556414).

The spelling of 1121055203 in words is "one billion, one hundred twenty-one million, fifty-five thousand, two hundred three".