111212210133 has 12 divisors (see below), whose sum is σ = 164981477388. Its totient is φ = 72137649600.

The previous prime is 111212210107. The next prime is 111212210143. The reversal of 111212210133 is 331012212111.

111212210133 is a `hidden beast` number, since 111 + 212 + 210 + 133 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 51616659249 + 59595550884 = 227193^2 + 244122^2 .

It is not a de Polignac number, because 111212210133 - 2²⁵ = 111178655701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111212210143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 166984968 + ... + 166985633.

It is an arithmetic number, because the mean of its divisors is an integer number (13748456449).

Almost surely, 2^111212210133 is an apocalyptic number.

It is an amenable number.

111212210133 is a deficient number, since it is larger than the sum of its proper divisors (53769267255).

111212210133 is a wasteful number, since it uses less digits than its factorization.

111212210133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333970644 (or 333970641 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 111212210133 its reverse (331012212111), we get a palindrome (442224422244).

The spelling of 111212210133 in words is "one hundred eleven billion, two hundred twelve million, two hundred ten thousand, one hundred thirty-three".