1101120203 has 4 divisors (see below), whose sum is σ = 1104387960. Its totient is φ = 1097852448.

The previous prime is 1101120199. The next prime is 1101120233. The reversal of 1101120203 is 3020211011.

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 1101120203 - 2² = 1101120199 is a prime.

It is a super-2 number, since 2×1101120203² = 2424931402909522418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1101120233) 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 in 3 ways as a sum of consecutive naturals, for example, 1633373 + ... + 1634046.

It is an arithmetic number, because the mean of its divisors is an integer number (276096990).

Almost surely, 2^1101120203 is an apocalyptic number.

1101120203 is a deficient number, since it is larger than the sum of its proper divisors (3267757).

1101120203 is an equidigital number, since it uses as much as digits as its factorization.

1101120203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3267756.

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

The square root of 1101120203 is about 33183.1313019130. The cubic root of 1101120203 is about 1032.6304096898.

Adding to 1101120203 its reverse (3020211011), we get a palindrome (4121331214).

The spelling of 1101120203 in words is "one billion, one hundred one million, one hundred twenty thousand, two hundred three".