121231133212 has 12 divisors (see below), whose sum is σ = 242462266480. Its totient is φ = 51956199936.

The previous prime is 121231133173. The next prime is 121231133263. The reversal of 121231133212 is 212331132121.

121231133212 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2164841637 + ... + 2164841692.

Almost surely, 2^121231133212 is an apocalyptic number.

It is an amenable number.

121231133212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

121231133212 is a wasteful number, since it uses less digits than its factorization.

121231133212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4329683340 (or 4329683338 counting only the distinct ones).

The product of its digits is 432, while the sum is 22.

Adding to 121231133212 its reverse (212331132121), we get a palindrome (333562265333).

The spelling of 121231133212 in words is "one hundred twenty-one billion, two hundred thirty-one million, one hundred thirty-three thousand, two hundred twelve".