111121222010211 has 32 divisors (see below), whose sum is σ = 188142242795520. Its totient is φ = 63497675354112.

The previous prime is 111121222010209. The next prime is 111121222010219. The reversal of 111121222010211 is 112010222121111.

It is a happy number.

111121222010211 is a `hidden beast` number, since 1 + 1 + 11 + 212 + 220 + 10 + 211 = 666.

It is not a de Polignac number, because 111121222010211 - 2¹ = 111121222010209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111121222010219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 138073966 + ... + 138876428.

It is an arithmetic number, because the mean of its divisors is an integer number (5879445087360).

Almost surely, 2^{111121222010211} is an apocalyptic number.

111121222010211 is a deficient number, since it is larger than the sum of its proper divisors (77021020785309).

111121222010211 is an equidigital number, since it uses as much as digits as its factorization.

111121222010211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1535152 (or 1535146 counting only the distinct ones).

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

Adding to 111121222010211 its reverse (112010222121111), we get a palindrome (223131444131322).

The spelling of 111121222010211 in words is "one hundred eleven trillion, one hundred twenty-one billion, two hundred twenty-two million, ten thousand, two hundred eleven".