111121222100211 has 24 divisors (see below), whose sum is σ = 170105594218560. Its totient is φ = 69659329049856.

The previous prime is 111121222100209. The next prime is 111121222100227. The reversal of 111121222100211 is 112001222121111.

It is a happy number.

111121222100211 is a `hidden beast` number, since 1 + 11 + 121 + 222 + 100 + 211 = 666.

It is not a de Polignac number, because 111121222100211 - 2¹ = 111121222100209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111121222100261) 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 23 ways as a sum of consecutive naturals, for example, 332075451 + ... + 332409908.

It is an arithmetic number, because the mean of its divisors is an integer number (7087733092440).

Almost surely, 2^{111121222100211} is an apocalyptic number.

111121222100211 is a deficient number, since it is larger than the sum of its proper divisors (58984372118349).

111121222100211 is a wasteful number, since it uses less digits than its factorization.

111121222100211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664486475 (or 664486472 counting only the distinct ones).

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

Adding to 111121222100211 its reverse (112001222121111), we get a palindrome (223122444221322).

The spelling of 111121222100211 in words is "one hundred eleven trillion, one hundred twenty-one billion, two hundred twenty-two million, one hundred thousand, two hundred eleven".