110111221212 has 12 divisors (see below), whose sum is σ = 256926182856. Its totient is φ = 36703740400.

The previous prime is 110111221159. The next prime is 110111221217. The reversal of 110111221212 is 212122111011.

It is a happy number.

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 = 110111221191 and 110111221200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110111221217) 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, 4587967539 + ... + 4587967562.

It is an arithmetic number, because the mean of its divisors is an integer number (21410515238).

Almost surely, 2^110111221212 is an apocalyptic number.

110111221212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

110111221212 is an abundant number, since it is smaller than the sum of its proper divisors (146814961644).

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

110111221212 is a wasteful number, since it uses less digits than its factorization.

110111221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9175935108 (or 9175935106 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 110111221212 its reverse (212122111011), we get a palindrome (322233332223).

The spelling of 110111221212 in words is "one hundred ten billion, one hundred eleven million, two hundred twenty-one thousand, two hundred twelve".