202122210121212 has 72 divisors (see below), whose sum is σ = 502855080845040. Its totient is φ = 63175160944640.

The previous prime is 202122210121207. The next prime is 202122210121213. The reversal of 202122210121212 is 212121012221202.

202122210121212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202122210121213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 107398089 + ... + 109263872.

It is an arithmetic number, because the mean of its divisors is an integer number (6984098345070).

Almost surely, 2^{202122210121212} is an apocalyptic number.

It is an amenable number.

202122210121212 is an abundant number, since it is smaller than the sum of its proper divisors (300732870723828).

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

202122210121212 is a wasteful number, since it uses less digits than its factorization.

202122210121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216662271 (or 216662252 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 202122210121212 its reverse (212121012221202), we get a palindrome (414243222342414).

The spelling of 202122210121212 in words is "two hundred two trillion, one hundred twenty-two billion, two hundred ten million, one hundred twenty-one thousand, two hundred twelve".