222120212201111 has 16 divisors (see below), whose sum is σ = 267212748691200. Its totient is φ = 180367979862528.

The previous prime is 222120212201101. The next prime is 222120212201123. The reversal of 222120212201111 is 111102212021222.

It is not a de Polignac number, because 222120212201111 - 2⁶ = 222120212201047 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 (222120212201101) 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, 104674295 + ... + 106775223.

It is an arithmetic number, because the mean of its divisors is an integer number (16700796793200).

Almost surely, 2^{222120212201111} is an apocalyptic number.

222120212201111 is a deficient number, since it is larger than the sum of its proper divisors (45092536490089).

222120212201111 is a wasteful number, since it uses less digits than its factorization.

222120212201111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2895878.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 222120212201111 its reverse (111102212021222), we get a palindrome (333222424222333).

The spelling of 222120212201111 in words is "two hundred twenty-two trillion, one hundred twenty billion, two hundred twelve million, two hundred one thousand, one hundred eleven".