121212200012 has 12 divisors (see below), whose sum is σ = 215716627560. Its totient is φ = 59578877856.

The previous prime is 121212200009. The next prime is 121212200023. The reversal of 121212200012 is 210002212121.

It is a self number, because there is not a number n which added to its sum of digits gives 121212200012.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 256805273 + ... + 256805744.

It is an arithmetic number, because the mean of its divisors is an integer number (17976385630).

Almost surely, 2^121212200012 is an apocalyptic number.

It is an amenable number.

121212200012 is a deficient number, since it is larger than the sum of its proper divisors (94504427548).

121212200012 is a wasteful number, since it uses less digits than its factorization.

121212200012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513611080 (or 513611078 counting only the distinct ones).

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

Adding to 121212200012 its reverse (210002212121), we get a palindrome (331214412133).

The spelling of 121212200012 in words is "one hundred twenty-one billion, two hundred twelve million, two hundred thousand, twelve".