121300312100203 has 16 divisors (see below), whose sum is σ = 124637202592000. Its totient is φ = 117966507972192.

The previous prime is 121300312100189. The next prime is 121300312100207. The reversal of 121300312100203 is 302001213003121.

It is a cyclic number.

It is not a de Polignac number, because 121300312100203 - 2²⁹ = 121299775229291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121300312100207) 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, 1478527858 + ... + 1478609896.

It is an arithmetic number, because the mean of its divisors is an integer number (7789825162000).

Almost surely, 2^{121300312100203} is an apocalyptic number.

121300312100203 is a deficient number, since it is larger than the sum of its proper divisors (3336890491797).

121300312100203 is a wasteful number, since it uses less digits than its factorization.

121300312100203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100354.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 121300312100203 its reverse (302001213003121), we get a palindrome (423301525103324).

The spelling of 121300312100203 in words is "one hundred twenty-one trillion, three hundred billion, three hundred twelve million, one hundred thousand, two hundred three".