212011220212111 has 16 divisors (see below), whose sum is σ = 222239429250048. Its totient is φ = 201867492824800.

The previous prime is 212011220212063. The next prime is 212011220212153. The reversal of 212011220212111 is 111212022110212.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 212011220212111 - 2¹¹ = 212011220210063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212011220242111) 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, 29216106 + ... + 35743576.

It is an arithmetic number, because the mean of its divisors is an integer number (13889964328128).

Almost surely, 2^{212011220212111} is an apocalyptic number.

212011220212111 is a deficient number, since it is larger than the sum of its proper divisors (10228209037937).

212011220212111 is a wasteful number, since it uses less digits than its factorization.

212011220212111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6533942.

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

Adding to 212011220212111 its reverse (111212022110212), we get a palindrome (323223242322323).

The spelling of 212011220212111 in words is "two hundred twelve trillion, eleven billion, two hundred twenty million, two hundred twelve thousand, one hundred eleven".