111222201212012 has 72 divisors (see below), whose sum is σ = 230803744987200. Its totient is φ = 46475139191040.

The previous prime is 111222201211997. The next prime is 111222201212039. The reversal of 111222201212012 is 210212102222111.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 101158262 + ... + 102251837.

Almost surely, 2^{111222201212012} is an apocalyptic number.

It is an amenable number.

111222201212012 is an abundant number, since it is smaller than the sum of its proper divisors (119581543775188).

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

111222201212012 is a wasteful number, since it uses less digits than its factorization.

111222201212012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203410191 (or 203410172 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 111222201212012 its reverse (210212102222111), we get a palindrome (321434303434123).

The spelling of 111222201212012 in words is "one hundred eleven trillion, two hundred twenty-two billion, two hundred one million, two hundred twelve thousand, twelve".