121122243212 has 36 divisors (see below), whose sum is σ = 225405635784. Its totient is φ = 56937999360.

The previous prime is 121122243191. The next prime is 121122243223. The reversal of 121122243212 is 212342221121.

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 11 ways as a sum of consecutive naturals, for example, 1039412 + ... + 1150052.

Almost surely, 2^121122243212 is an apocalyptic number.

It is an amenable number.

121122243212 is a deficient number, since it is larger than the sum of its proper divisors (104283392572).

121122243212 is a wasteful number, since it uses less digits than its factorization.

121122243212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111626 (or 111607 counting only the distinct ones).

The product of its digits is 768, while the sum is 23.

Adding to 121122243212 its reverse (212342221121), we get a palindrome (333464464333).

The spelling of 121122243212 in words is "one hundred twenty-one billion, one hundred twenty-two million, two hundred forty-three thousand, two hundred twelve".