121243113203 has 8 divisors (see below), whose sum is σ = 125427884400. Its totient is φ = 117058607008.

The previous prime is 121243113143. The next prime is 121243113209. The reversal of 121243113203 is 302311342121.

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 121243113203 - 2²⁰ = 121242064627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121243113209) 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, 1463900 + ... + 1544502.

It is an arithmetic number, because the mean of its divisors is an integer number (15678485550).

Almost surely, 2^121243113203 is an apocalyptic number.

121243113203 is a deficient number, since it is larger than the sum of its proper divisors (4184771197).

121243113203 is an equidigital number, since it uses as much as digits as its factorization.

121243113203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132501.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 121243113203 its reverse (302311342121), we get a palindrome (423554455324).

The spelling of 121243113203 in words is "one hundred twenty-one billion, two hundred forty-three million, one hundred thirteen thousand, two hundred three".