212001111010001 has 16 divisors (see below), whose sum is σ = 217759847454720. Its totient is φ = 206296851520080.

The previous prime is 212001111009997. The next prime is 212001111010063. The reversal of 212001111010001 is 100010111100212.

It is a cyclic number.

It is not a de Polignac number, because 212001111010001 - 2² = 212001111009997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212001111016001) 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 15 ways as a sum of consecutive naturals, for example, 5559965 + ... + 21328746.

It is an arithmetic number, because the mean of its divisors is an integer number (13609990465920).

Almost surely, 2^{212001111010001} is an apocalyptic number.

It is an amenable number.

212001111010001 is a deficient number, since it is larger than the sum of its proper divisors (5758736444719).

212001111010001 is a wasteful number, since it uses less digits than its factorization.

212001111010001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26889724.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 212001111010001 its reverse (100010111100212), we get a palindrome (312011222110213).

The spelling of 212001111010001 in words is "two hundred twelve trillion, one billion, one hundred eleven million, ten thousand, one".