111121120211212 has 12 divisors (see below), whose sum is σ = 194462058208320. Its totient is φ = 55560532151696.

The previous prime is 111121120211141. The next prime is 111121120211239. The reversal of 111121120211212 is 212112021121111.

It is a self number, because there is not a number n which added to its sum of digits gives 111121120211212.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3809358 + ... + 15386794.

It is an arithmetic number, because the mean of its divisors is an integer number (16205171517360).

Almost surely, 2^{111121120211212} is an apocalyptic number.

It is an amenable number.

111121120211212 is a deficient number, since it is larger than the sum of its proper divisors (83340937997108).

111121120211212 is a wasteful number, since it uses less digits than its factorization.

111121120211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13976960 (or 13976958 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 111121120211212 its reverse (212112021121111), we get a palindrome (323233141332323).

The spelling of 111121120211212 in words is "one hundred eleven trillion, one hundred twenty-one billion, one hundred twenty million, two hundred eleven thousand, two hundred twelve".