221200211022111 has 12 divisors (see below), whose sum is σ = 320690424839200. Its totient is φ = 146922649385760.

The previous prime is 221200211022071. The next prime is 221200211022113. The reversal of 221200211022111 is 111220112002122.

221200211022111 is a `hidden beast` number, since 2 + 21 + 200 + 211 + 0 + 221 + 11 = 666.

It is not a de Polignac number, because 221200211022111 - 2¹⁸ = 221200210759967 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 (221200211022113) 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, 45346494286 + ... + 45346499163.

Almost surely, 2^{221200211022111} is an apocalyptic number.

221200211022111 is a deficient number, since it is larger than the sum of its proper divisors (99490213817089).

221200211022111 is a wasteful number, since it uses less digits than its factorization.

221200211022111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90692993726 (or 90692993723 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 221200211022111 its reverse (111220112002122), we get a palindrome (332420323024233).

The spelling of 221200211022111 in words is "two hundred twenty-one trillion, two hundred billion, two hundred eleven million, twenty-two thousand, one hundred eleven".