121131231203 has 4 divisors (see below), whose sum is σ = 125308170240. Its totient is φ = 116954292168.

The previous prime is 121131231181. The next prime is 121131231241. The reversal of 121131231203 is 302132131121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121131231203 - 2¹⁴ = 121131214819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121931231203) 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, 2088469475 + ... + 2088469532.

It is an arithmetic number, because the mean of its divisors is an integer number (31327042560).

Almost surely, 2^121131231203 is an apocalyptic number.

121131231203 is a deficient number, since it is larger than the sum of its proper divisors (4176939037).

121131231203 is an equidigital number, since it uses as much as digits as its factorization.

121131231203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4176939036.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 121131231203 its reverse (302132131121), we get a palindrome (423263362324).

The spelling of 121131231203 in words is "one hundred twenty-one billion, one hundred thirty-one million, two hundred thirty-one thousand, two hundred three".