121103121203 has 16 divisors (see below), whose sum is σ = 124885864800. Its totient is φ = 117378243840.

The previous prime is 121103121193. The next prime is 121103121211. The reversal of 121103121203 is 302121301121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121103121203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121103121233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5559908 + ... + 5581646.

It is an arithmetic number, because the mean of its divisors is an integer number (7805366550).

Almost surely, 2^121103121203 is an apocalyptic number.

121103121203 is a deficient number, since it is larger than the sum of its proper divisors (3782743597).

121103121203 is a wasteful number, since it uses less digits than its factorization.

121103121203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23062.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 121103121203 its reverse (302121301121), we get a palindrome (423224422324).

It can be divided in two parts, 12110 and 3121203, that added together give a palindrome (3133313).

The spelling of 121103121203 in words is "one hundred twenty-one billion, one hundred three million, one hundred twenty-one thousand, two hundred three".