1121212303 has 4 divisors (see below), whose sum is σ = 1169960688. Its totient is φ = 1072463920.

The previous prime is 1121212277. The next prime is 1121212321. The reversal of 1121212303 is 3032121211.

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

It is a cyclic number.

It is not a de Polignac number, because 1121212303 - 2¹⁷ = 1121081231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121212343) 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, 24374158 + ... + 24374203.

It is an arithmetic number, because the mean of its divisors is an integer number (292490172).

Almost surely, 2^1121212303 is an apocalyptic number.

1121212303 is a deficient number, since it is larger than the sum of its proper divisors (48748385).

1121212303 is an equidigital number, since it uses as much as digits as its factorization.

1121212303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48748384.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1121212303 is about 33484.5084031407. The cubic root of 1121212303 is about 1038.8733802704.

Adding to 1121212303 its reverse (3032121211), we get a palindrome (4153333514).

The spelling of 1121212303 in words is "one billion, one hundred twenty-one million, two hundred twelve thousand, three hundred three".