111220210212 has 12 divisors (see below), whose sum is σ = 259513823856. Its totient is φ = 37073403400.

The previous prime is 111220210207. The next prime is 111220210217. The reversal of 111220210212 is 212012022111.

It is an interprime number because it is at equal distance from previous prime (111220210207) and next prime (111220210217).

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 = 111220210191 and 111220210200.

It is not an unprimeable number, because it can be changed into a prime (111220210217) 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, 4634175414 + ... + 4634175437.

It is an arithmetic number, because the mean of its divisors is an integer number (21626151988).

Almost surely, 2^111220210212 is an apocalyptic number.

111220210212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111220210212 is an abundant number, since it is smaller than the sum of its proper divisors (148293613644).

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

111220210212 is a wasteful number, since it uses less digits than its factorization.

111220210212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9268350858 (or 9268350856 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 111220210212 its reverse (212012022111), we get a palindrome (323232232323).

The spelling of 111220210212 in words is "one hundred eleven billion, two hundred twenty million, two hundred ten thousand, two hundred twelve".