212101111222001 has 8 divisors (see below), whose sum is σ = 217740645364704. Its totient is φ = 206493711177600.

The previous prime is 212101111221997. The next prime is 212101111222009. The reversal of 212101111222001 is 100222111101212.

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 212101111222001 - 2² = 212101111221997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212101111222009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8033511200 + ... + 8033537601.

It is an arithmetic number, because the mean of its divisors is an integer number (27217580670588).

Almost surely, 2^{212101111222001} is an apocalyptic number.

It is an amenable number.

212101111222001 is a deficient number, since it is larger than the sum of its proper divisors (5639534142703).

212101111222001 is a wasteful number, since it uses less digits than its factorization.

212101111222001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16067049151.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 212101111222001 its reverse (100222111101212), we get a palindrome (312323222323213).

The spelling of 212101111222001 in words is "two hundred twelve trillion, one hundred one billion, one hundred eleven million, two hundred twenty-two thousand, one".