212121122011201 has 8 divisors (see below), whose sum is σ = 235807103377664. Its totient is φ = 189487850927760.

The previous prime is 212121122011157. The next prime is 212121122011207. The reversal of 212121122011201 is 102110221121212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212121122011201 - 2⁹ = 212121122010689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212121122011207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263177570331 + ... + 263177571136.

It is an arithmetic number, because the mean of its divisors is an integer number (29475887922208).

Almost surely, 2^{212121122011201} is an apocalyptic number.

It is an amenable number.

212121122011201 is a deficient number, since it is larger than the sum of its proper divisors (23685981366463).

212121122011201 is a wasteful number, since it uses less digits than its factorization.

212121122011201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526355141511.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 212121122011201 its reverse (102110221121212), we get a palindrome (314231343132413).

The spelling of 212121122011201 in words is "two hundred twelve trillion, one hundred twenty-one billion, one hundred twenty-two million, eleven thousand, two hundred one".