1121001203 has 8 divisors (see below), whose sum is σ = 1281656160. Its totient is φ = 960474240.

The previous prime is 1121001151. The next prime is 1121001227. The reversal of 1121001203 is 3021001211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1121001203 - 2²⁰ = 1119952627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121001703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12428 + ... + 48953.

It is an arithmetic number, because the mean of its divisors is an integer number (160207020).

Almost surely, 2^1121001203 is an apocalyptic number.

1121001203 is a deficient number, since it is larger than the sum of its proper divisors (160654957).

1121001203 is an equidigital number, since it uses as much as digits as its factorization.

1121001203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63997.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1121001203 is about 33481.3560507934. The cubic root of 1121001203 is about 1038.8081770569.

Adding to 1121001203 its reverse (3021001211), we get a palindrome (4142002414).

The spelling of 1121001203 in words is "one billion, one hundred twenty-one million, one thousand, two hundred three".