111130111212 has 12 divisors (see below), whose sum is σ = 259303592856. Its totient is φ = 37043370400.

The previous prime is 111130111201. The next prime is 111130111219. The reversal of 111130111212 is 212111031111.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 111130111191 and 111130111200.

It is not an unprimeable number, because it can be changed into a prime (111130111219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4630421289 + ... + 4630421312.

It is an arithmetic number, because the mean of its divisors is an integer number (21608632738).

Almost surely, 2^111130111212 is an apocalyptic number.

111130111212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111130111212 is an abundant number, since it is smaller than the sum of its proper divisors (148173481644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111130111212 is a wasteful number, since it uses less digits than its factorization.

111130111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9260842608 (or 9260842606 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 15.

Adding to 111130111212 its reverse (212111031111), we get a palindrome (323241142323).

The spelling of 111130111212 in words is "one hundred eleven billion, one hundred thirty million, one hundred eleven thousand, two hundred twelve".