1113121122203 has 4 divisors (see below), whose sum is σ = 1113130228488. Its totient is φ = 1113112015920.

The previous prime is 1113121122137. The next prime is 1113121122233. The reversal of 1113121122203 is 3022211213111.

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 1113121122203 - 2²⁶ = 1113054013339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1113121122233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4367258 + ... + 4615103.

It is an arithmetic number, because the mean of its divisors is an integer number (278282557122).

Almost surely, 2^{1113121122203} is an apocalyptic number.

1113121122203 is a deficient number, since it is larger than the sum of its proper divisors (9106285).

1113121122203 is an equidigital number, since it uses as much as digits as its factorization.

1113121122203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9106284.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1113121122203 its reverse (3022211213111), we get a palindrome (4135332335314).

The spelling of 1113121122203 in words is "one trillion, one hundred thirteen billion, one hundred twenty-one million, one hundred twenty-two thousand, two hundred three".