121311203230212 has 48 divisors (see below), whose sum is σ = 295435148572032. Its totient is φ = 38669932604160.

The previous prime is 121311203230153. The next prime is 121311203230219. The reversal of 121311203230212 is 212032302113121.

It is not an unprimeable number, because it can be changed into a prime (121311203230219) 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, 49958239 + ... + 52330182.

It is an arithmetic number, because the mean of its divisors is an integer number (6154898928584).

Almost surely, 2^{121311203230212} is an apocalyptic number.

121311203230212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121311203230212 is an abundant number, since it is smaller than the sum of its proper divisors (174123945341820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121311203230212 is a wasteful number, since it uses less digits than its factorization.

121311203230212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102292748 (or 102292746 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 121311203230212 its reverse (212032302113121), we get a palindrome (333343505343333).

The spelling of 121311203230212 in words is "one hundred twenty-one trillion, three hundred eleven billion, two hundred three million, two hundred thirty thousand, two hundred twelve".