212111011212201 has 6 divisors (see below), whose sum is σ = 306382571750970. Its totient is φ = 141407340808128.

The previous prime is 212111011212143. The next prime is 212111011212241. The reversal of 212111011212201 is 102212110111212.

It is a happy number.

212111011212201 is a `hidden beast` number, since 21 + 211 + 10 + 11 + 212 + 201 = 666.

It can be written as a sum of positive squares in only one way, i.e., 111035112782400 + 101075898429801 = 10537320^2 + 10053651^2 .

It is not a de Polignac number, because 212111011212201 - 2⁷ = 212111011212073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212111011212241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11783945067336 + ... + 11783945067353.

It is an arithmetic number, because the mean of its divisors is an integer number (51063761958495).

Almost surely, 2^{212111011212201} is an apocalyptic number.

It is an amenable number.

212111011212201 is a deficient number, since it is larger than the sum of its proper divisors (94271560538769).

212111011212201 is a wasteful number, since it uses less digits than its factorization.

212111011212201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23567890134695 (or 23567890134692 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 212111011212201 its reverse (102212110111212), we get a palindrome (314323121323413).

It can be divided in two parts, 212111011 and 212201, that added together give a palindrome (212323212).

The spelling of 212111011212201 in words is "two hundred twelve trillion, one hundred eleven billion, eleven million, two hundred twelve thousand, two hundred one".