121200110012 has 24 divisors (see below), whose sum is σ = 224600801040. Its totient is φ = 57029218560.

The previous prime is 121200109997. The next prime is 121200110077. The reversal of 121200110012 is 210011002121.

It is a junction number, because it is equal to n+sod(n) for n = 121200109975 and 121200110002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 576314 + ... + 757982.

It is an arithmetic number, because the mean of its divisors is an integer number (9358366710).

Almost surely, 2^121200110012 is an apocalyptic number.

It is an amenable number.

121200110012 is a deficient number, since it is larger than the sum of its proper divisors (103400691028).

121200110012 is a wasteful number, since it uses less digits than its factorization.

121200110012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191501 (or 191499 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 121200110012 its reverse (210011002121), we get a palindrome (331211112133).

The spelling of 121200110012 in words is "one hundred twenty-one billion, two hundred million, one hundred ten thousand, twelve".