102120201221212 has 24 divisors (see below), whose sum is σ = 181161029691936. Its totient is φ = 50359927027968.

The previous prime is 102120201221123. The next prime is 102120201221237. The reversal of 102120201221212 is 212122102021201.

It is a self number, because there is not a number n which added to its sum of digits gives 102120201221212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18248553 + ... + 23178655.

It is an arithmetic number, because the mean of its divisors is an integer number (7548376237164).

Almost surely, 2^{102120201221212} is an apocalyptic number.

It is an amenable number.

102120201221212 is a deficient number, since it is larger than the sum of its proper divisors (79040828470724).

102120201221212 is a wasteful number, since it uses less digits than its factorization.

102120201221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5001117 (or 5001115 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 102120201221212 its reverse (212122102021201), we get a palindrome (314242303242413).

The spelling of 102120201221212 in words is "one hundred two trillion, one hundred twenty billion, two hundred one million, two hundred twenty-one thousand, two hundred twelve".