111131202212 has 6 divisors (see below), whose sum is σ = 194479603878. Its totient is φ = 55565601104.

The previous prime is 111131202211. The next prime is 111131202253. The reversal of 111131202212 is 212202131111.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 107962187776 + 3169014436 = 328576^2 + 56294^2 .

It is not an unprimeable number, because it can be changed into a prime (111131202211) 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 as a sum of consecutive naturals, namely, 13891400273 + ... + 13891400280.

It is an arithmetic number, because the mean of its divisors is an integer number (32413267313).

Almost surely, 2^111131202212 is an apocalyptic number.

It is an amenable number.

111131202212 is a deficient number, since it is larger than the sum of its proper divisors (83348401666).

111131202212 is a wasteful number, since it uses less digits than its factorization.

111131202212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27782800557 (or 27782800555 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 111131202212 its reverse (212202131111), we get a palindrome (323333333323).

The spelling of 111131202212 in words is "one hundred eleven billion, one hundred thirty-one million, two hundred two thousand, two hundred twelve".