212201102221111 has 4 divisors (see below), whose sum is σ = 223369581285400. Its totient is φ = 201032623156824.

The previous prime is 212201102221103. The next prime is 212201102221159. The reversal of 212201102221111 is 111122201102212.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 212201102221111 - 2³ = 212201102221103 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 11168479064269 = 212201102221111 / (2 + 1 + 2 + 2 + 0 + 1 + 1 + 0 + 2 + 2 + 2 + 1 + 1 + 1 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212201102222111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5584239532116 + ... + 5584239532153.

It is an arithmetic number, because the mean of its divisors is an integer number (55842395321350).

Almost surely, 2^{212201102221111} is an apocalyptic number.

212201102221111 is a deficient number, since it is larger than the sum of its proper divisors (11168479064289).

212201102221111 is a wasteful number, since it uses less digits than its factorization.

212201102221111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11168479064288.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 212201102221111 its reverse (111122201102212), we get a palindrome (323323303323323).

The spelling of 212201102221111 in words is "two hundred twelve trillion, two hundred one billion, one hundred two million, two hundred twenty-one thousand, one hundred eleven".