111210212111212 has 6 divisors (see below), whose sum is σ = 194617871194628. Its totient is φ = 55605106055604.

The previous prime is 111210212111171. The next prime is 111210212111227. The reversal of 111210212111212 is 212111212012111.

It is a super-2 number, since 2×111210212111212² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111210212111212.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13901276513898 + ... + 13901276513905.

Almost surely, 2^{111210212111212} is an apocalyptic number.

It is an amenable number.

111210212111212 is a deficient number, since it is larger than the sum of its proper divisors (83407659083416).

111210212111212 is a wasteful number, since it uses less digits than its factorization.

111210212111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27802553027807 (or 27802553027805 counting only the distinct ones).

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

Adding to 111210212111212 its reverse (212111212012111), we get a palindrome (323321424123323).

The spelling of 111210212111212 in words is "one hundred eleven trillion, two hundred ten billion, two hundred twelve million, one hundred eleven thousand, two hundred twelve".