121213112203 has 8 divisors (see below), whose sum is σ = 121299766560. Its totient is φ = 121126494720.

The previous prime is 121213112197. The next prime is 121213112213. The reversal of 121213112203 is 302211312121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121213112203 - 2⁵ = 121213112171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121213112213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10004113 + ... + 10016221.

It is an arithmetic number, because the mean of its divisors is an integer number (15162470820).

Almost surely, 2^121213112203 is an apocalyptic number.

121213112203 is a deficient number, since it is larger than the sum of its proper divisors (86654357).

121213112203 is a wasteful number, since it uses less digits than its factorization.

121213112203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18437.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 121213112203 its reverse (302211312121), we get a palindrome (423424424324).

The spelling of 121213112203 in words is "one hundred twenty-one billion, two hundred thirteen million, one hundred twelve thousand, two hundred three".