121011311103 has 16 divisors (see below), whose sum is σ = 162149669376. Its totient is φ = 80274368160.

The previous prime is 121011311059. The next prime is 121011311107. The reversal of 121011311103 is 301113110121.

It is not a de Polignac number, because 121011311103 - 2¹⁶ = 121011245567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121011311107) 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, 519438 + ... + 715428.

It is an arithmetic number, because the mean of its divisors is an integer number (10134354336).

Almost surely, 2^121011311103 is an apocalyptic number.

121011311103 is a deficient number, since it is larger than the sum of its proper divisors (41138358273).

121011311103 is a wasteful number, since it uses less digits than its factorization.

121011311103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197014.

The product of its (nonzero) digits is 18, while the sum is 15.

Adding to 121011311103 its reverse (301113110121), we get a palindrome (422124421224).

The spelling of 121011311103 in words is "one hundred twenty-one billion, eleven million, three hundred eleven thousand, one hundred three".