1121220121103 has 4 divisors (see below), whose sum is σ = 1139600778888. Its totient is φ = 1102839463320.

The previous prime is 1121220121097. The next prime is 1121220121117. The reversal of 1121220121103 is 3011210221211.

It is a happy number.

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 1121220121103 - 2⁸ = 1121220120847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121220121163) 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, 9190328801 + ... + 9190328922.

It is an arithmetic number, because the mean of its divisors is an integer number (284900194722).

Almost surely, 2^{1121220121103} is an apocalyptic number.

1121220121103 is a deficient number, since it is larger than the sum of its proper divisors (18380657785).

1121220121103 is an equidigital number, since it uses as much as digits as its factorization.

1121220121103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18380657784.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 1121220121103 its reverse (3011210221211), we get a palindrome (4132430342314).

The spelling of 1121220121103 in words is "one trillion, one hundred twenty-one billion, two hundred twenty million, one hundred twenty-one thousand, one hundred three".