212101021122201 has 12 divisors (see below), whose sum is σ = 306368371662912. Its totient is φ = 141400574574936.

The previous prime is 212101021122181. The next prime is 212101021122227. The reversal of 212101021122201 is 102221120101212.

212101021122201 is a `hidden beast` number, since 21 + 210 + 1 + 0 + 211 + 2 + 220 + 1 = 666.

212101021122201 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212101021122201 - 2¹⁴ = 212101021105817 is a prime.

It is a super-2 number, since 2×212101021122201² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212101021142201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4934140 + ... + 21178946.

It is an arithmetic number, because the mean of its divisors is an integer number (25530697638576).

Almost surely, 2^{212101021122201} is an apocalyptic number.

It is an amenable number.

212101021122201 is a deficient number, since it is larger than the sum of its proper divisors (94267350540711).

212101021122201 is a wasteful number, since it uses less digits than its factorization.

212101021122201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17695540 (or 17695537 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 212101021122201 its reverse (102221120101212), we get a palindrome (314322141223413).

The spelling of 212101021122201 in words is "two hundred twelve trillion, one hundred one billion, twenty-one million, one hundred twenty-two thousand, two hundred one".