121200120212 has 24 divisors (see below), whose sum is σ = 234340900416. Its totient is φ = 54555552128.

The previous prime is 121200120211. The next prime is 121200120227. The reversal of 121200120212 is 212021002121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121200120211) 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, 38745278 + ... + 38748405.

It is an arithmetic number, because the mean of its divisors is an integer number (9764204184).

Almost surely, 2^121200120212 is an apocalyptic number.

It is an amenable number.

121200120212 is a deficient number, since it is larger than the sum of its proper divisors (113140780204).

121200120212 is a wasteful number, since it uses less digits than its factorization.

121200120212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77493727 (or 77493725 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 121200120212 its reverse (212021002121), we get a palindrome (333221122333).

The spelling of 121200120212 in words is "one hundred twenty-one billion, two hundred million, one hundred twenty thousand, two hundred twelve".