221201122000111 has 16 divisors (see below), whose sum is σ = 241345458731520. Its totient is φ = 201062644657920.

The previous prime is 221201122000109. The next prime is 221201122000123. The reversal of 221201122000111 is 111000221102122.

It is a cyclic number.

It is not a de Polignac number, because 221201122000111 - 2¹ = 221201122000109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221201122060111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3530205700 + ... + 3530268358.

It is an arithmetic number, because the mean of its divisors is an integer number (15084091170720).

Almost surely, 2^{221201122000111} is an apocalyptic number.

221201122000111 is a deficient number, since it is larger than the sum of its proper divisors (20144336731409).

221201122000111 is a wasteful number, since it uses less digits than its factorization.

221201122000111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104286.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 221201122000111 its reverse (111000221102122), we get a palindrome (332201343102233).

The spelling of 221201122000111 in words is "two hundred twenty-one trillion, two hundred one billion, one hundred twenty-two million, one hundred eleven", and thus it is an aban number.