2121102120212 has 12 divisors (see below), whose sum is σ = 3798252634176. Its totient is φ = 1035887081880.

The previous prime is 2121102120161. The next prime is 2121102120217. The reversal of 2121102120212 is 2120212011212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121102120217) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 6165994364 + ... + 6165994707.

It is an arithmetic number, because the mean of its divisors is an integer number (316521052848).

Almost surely, 2^{2121102120212} is an apocalyptic number.

It is an amenable number.

2121102120212 is a deficient number, since it is larger than the sum of its proper divisors (1677150513964).

2121102120212 is a wasteful number, since it uses less digits than its factorization.

2121102120212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12331989118 (or 12331989116 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2121102120212 its reverse (2120212011212), we get a palindrome (4241314131424).

The spelling of 2121102120212 in words is "two trillion, one hundred twenty-one billion, one hundred two million, one hundred twenty thousand, two hundred twelve".