111200021221211 has 16 divisors (see below), whose sum is σ = 124961634497280. Its totient is φ = 98182451268000.

The previous prime is 111200021221199. The next prime is 111200021221217. The reversal of 111200021221211 is 112122120002111.

It is a cyclic number.

It is not a de Polignac number, because 111200021221211 - 2³⁴ = 111182841352027 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111200021221211.

It is not an unprimeable number, because it can be changed into a prime (111200021221217) 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, 34560836 + ... + 37641086.

It is an arithmetic number, because the mean of its divisors is an integer number (7810102156080).

Almost surely, 2^{111200021221211} is an apocalyptic number.

111200021221211 is a deficient number, since it is larger than the sum of its proper divisors (13761613276069).

111200021221211 is a wasteful number, since it uses less digits than its factorization.

111200021221211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3201026.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 111200021221211 its reverse (112122120002111), we get a palindrome (223322141223322).

The spelling of 111200021221211 in words is "one hundred eleven trillion, two hundred billion, twenty-one million, two hundred twenty-one thousand, two hundred eleven".