111215133406 has 16 divisors (see below), whose sum is σ = 189110754000. Its totient is φ = 48628479168.

The previous prime is 111215133401. The next prime is 111215133413. The reversal of 111215133406 is 604331512111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111215133401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112565431 + ... + 112566418.

It is an arithmetic number, because the mean of its divisors is an integer number (11819422125).

Almost surely, 2^111215133406 is an apocalyptic number.

111215133406 is a deficient number, since it is larger than the sum of its proper divisors (77895620594).

111215133406 is a wasteful number, since it uses less digits than its factorization.

111215133406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225131883.

The product of its (nonzero) digits is 2160, while the sum is 28.

Adding to 111215133406 its reverse (604331512111), we get a palindrome (715546645517).

The spelling of 111215133406 in words is "one hundred eleven billion, two hundred fifteen million, one hundred thirty-three thousand, four hundred six".