20121102200212 has 48 divisors (see below), whose sum is σ = 39575516908032. Its totient is φ = 8881489520640.

The previous prime is 20121102200161. The next prime is 20121102200219. The reversal of 20121102200212 is 21200220112102.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121102200219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6251637 + ... + 8906467.

It is an arithmetic number, because the mean of its divisors is an integer number (824489935584).

Almost surely, 2^{20121102200212} is an apocalyptic number.

It is an amenable number.

20121102200212 is a deficient number, since it is larger than the sum of its proper divisors (19454414707820).

20121102200212 is a wasteful number, since it uses less digits than its factorization.

20121102200212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2661208 (or 2661206 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20121102200212 its reverse (21200220112102), we get a palindrome (41321322312314).

The spelling of 20121102200212 in words is "twenty trillion, one hundred twenty-one billion, one hundred two million, two hundred thousand, two hundred twelve".