102111221112 has 32 divisors (see below), whose sum is σ = 255621674880. Its totient is φ = 33991257440.

The previous prime is 102111221077. The next prime is 102111221221. The reversal of 102111221112 is 211122111201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 102111221091 and 102111221100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2845314 + ... + 2880977.

It is an arithmetic number, because the mean of its divisors is an integer number (7988177340).

Almost surely, 2^102111221112 is an apocalyptic number.

102111221112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

102111221112 is an abundant number, since it is smaller than the sum of its proper divisors (153510453768).

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

102111221112 is a wasteful number, since it uses less digits than its factorization.

102111221112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5727043 (or 5727039 counting only the distinct ones).

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

Adding to 102111221112 its reverse (211122111201), we get a palindrome (313233332313).

The spelling of 102111221112 in words is "one hundred two billion, one hundred eleven million, two hundred twenty-one thousand, one hundred twelve".