211201222101111 has 12 divisors (see below), whose sum is σ = 332801925735240. Its totient is φ = 128000740667280.

The previous prime is 211201222101091. The next prime is 211201222101167. The reversal of 211201222101111 is 111101222102112.

It is a happy number.

211201222101111 is a `hidden beast` number, since 211 + 20 + 1 + 222 + 101 + 111 = 666.

It is not a de Polignac number, because 211201222101111 - 2⁶ = 211201222101047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211201222141111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1066672838796 + ... + 1066672838993.

It is an arithmetic number, because the mean of its divisors is an integer number (27733493811270).

Almost surely, 2^{211201222101111} is an apocalyptic number.

211201222101111 is a deficient number, since it is larger than the sum of its proper divisors (121600703634129).

211201222101111 is a wasteful number, since it uses less digits than its factorization.

211201222101111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2133345677806 (or 2133345677803 counting only the distinct ones).

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

Adding to 211201222101111 its reverse (111101222102112), we get a palindrome (322302444203223).

The spelling of 211201222101111 in words is "two hundred eleven trillion, two hundred one billion, two hundred twenty-two million, one hundred one thousand, one hundred eleven".