212120222100201 has 6 divisors (see below), whose sum is σ = 306395876366970. Its totient is φ = 141413481400128.

The previous prime is 212120222100179. The next prime is 212120222100239. The reversal of 212120222100201 is 102001222021212.

It is a happy number.

212120222100201 is a `hidden beast` number, since 2 + 121 + 20 + 222 + 100 + 201 = 666.

It can be written as a sum of positive squares in only one way, i.e., 200998670760000 + 11121551340201 = 14177400^2 + 3334899^2 .

It is not a de Polignac number, because 212120222100201 - 2¹⁴ = 212120222083817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212120222100251) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11784456783336 + ... + 11784456783353.

It is an arithmetic number, because the mean of its divisors is an integer number (51065979394495).

Almost surely, 2^{212120222100201} is an apocalyptic number.

It is an amenable number.

212120222100201 is a deficient number, since it is larger than the sum of its proper divisors (94275654266769).

212120222100201 is a wasteful number, since it uses less digits than its factorization.

212120222100201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23568913566695 (or 23568913566692 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 212120222100201 its reverse (102001222021212), we get a palindrome (314121444121413).

The spelling of 212120222100201 in words is "two hundred twelve trillion, one hundred twenty billion, two hundred twenty-two million, one hundred thousand, two hundred one".