111231110212 has 6 divisors (see below), whose sum is σ = 194654442878. Its totient is φ = 55615555104.

The previous prime is 111231110191. The next prime is 111231110227. The reversal of 111231110212 is 212011132111.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 110999583556 + 231526656 = 333166^2 + 15216^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13903888773 + ... + 13903888780.

Almost surely, 2^111231110212 is an apocalyptic number.

It is an amenable number.

111231110212 is a deficient number, since it is larger than the sum of its proper divisors (83423332666).

111231110212 is a wasteful number, since it uses less digits than its factorization.

111231110212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27807777557 (or 27807777555 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 111231110212 its reverse (212011132111), we get a palindrome (323242242323).

The spelling of 111231110212 in words is "one hundred eleven billion, two hundred thirty-one million, one hundred ten thousand, two hundred twelve".