12121201103 has 4 divisors (see below), whose sum is σ = 13223128488. Its totient is φ = 11019273720.

The previous prime is 12121201087. The next prime is 12121201109. The reversal of 12121201103 is 30110212121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30110212121 = 11 ⋅2737292011.

It is a cyclic number.

It is not a de Polignac number, because 12121201103 - 2⁴ = 12121201087 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 (12121201109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 550963676 + ... + 550963697.

It is an arithmetic number, because the mean of its divisors is an integer number (3305782122).

Almost surely, 2^12121201103 is an apocalyptic number.

12121201103 is a deficient number, since it is larger than the sum of its proper divisors (1101927385).

12121201103 is a wasteful number, since it uses less digits than its factorization.

12121201103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1101927384.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 12121201103 its reverse (30110212121), we get a palindrome (42231413224).

The spelling of 12121201103 in words is "twelve billion, one hundred twenty-one million, two hundred one thousand, one hundred three".