212201122011001 has 4 divisors (see below), whose sum is σ = 212411430358900. Its totient is φ = 211990813663104.

The previous prime is 212201122010971. The next prime is 212201122011013. The reversal of 212201122011001 is 100110221102212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20819463237225 + 191381658773776 = 4562835^2 + 13834076^2 .

It is a cyclic number.

It is not a de Polignac number, because 212201122011001 - 2¹⁵ = 212201121978233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212201122011041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105154172436 + ... + 105154174453.

It is an arithmetic number, because the mean of its divisors is an integer number (53102857589725).

Almost surely, 2^{212201122011001} is an apocalyptic number.

It is an amenable number.

212201122011001 is a deficient number, since it is larger than the sum of its proper divisors (210308347899).

212201122011001 is a wasteful number, since it uses less digits than its factorization.

212201122011001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210308347898.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 212201122011001 its reverse (100110221102212), we get a palindrome (312311343113213).

The spelling of 212201122011001 in words is "two hundred twelve trillion, two hundred one billion, one hundred twenty-two million, eleven thousand, one".