20101210201212 has 96 divisors (see below), whose sum is σ = 54728632627200. Its totient is φ = 5623076239872.

The previous prime is 20101210201199. The next prime is 20101210201243. The reversal of 20101210201212 is 21210201210102.

It is a junction number, because it is equal to n+sod(n) for n = 20101210201191 and 20101210201200.

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 31 ways as a sum of consecutive naturals, for example, 2580537 + ... + 6845552.

It is an arithmetic number, because the mean of its divisors is an integer number (570089923200).

Almost surely, 2^{20101210201212} is an apocalyptic number.

It is an amenable number.

20101210201212 is an abundant number, since it is smaller than the sum of its proper divisors (34627422425988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20101210201212 is a wasteful number, since it uses less digits than its factorization.

20101210201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9426635 (or 9426633 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20101210201212 its reverse (21210201210102), we get a palindrome (41311411411314).

The spelling of 20101210201212 in words is "twenty trillion, one hundred one billion, two hundred ten million, two hundred one thousand, two hundred twelve".