111011211222012 has 24 divisors (see below), whose sum is σ = 287806843909200. Its totient is φ = 37003737073968.

The previous prime is 111011211221971. The next prime is 111011211222017. The reversal of 111011211222012 is 210222112110111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111011211222017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 513940792587 + ... + 513940792802.

It is an arithmetic number, because the mean of its divisors is an integer number (11991951829550).

Almost surely, 2^{111011211222012} is an apocalyptic number.

111011211222012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111011211222012 is an abundant number, since it is smaller than the sum of its proper divisors (176795632687188).

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

111011211222012 is a wasteful number, since it uses less digits than its factorization.

111011211222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1027881585402 (or 1027881585394 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 111011211222012 its reverse (210222112110111), we get a palindrome (321233323332123).

The spelling of 111011211222012 in words is "one hundred eleven trillion, eleven billion, two hundred eleven million, two hundred twenty-two thousand, twelve".