102221111112 has 128 divisors (see below), whose sum is σ = 278220096000. Its totient is φ = 31170355200.

The previous prime is 102221111081. The next prime is 102221111117. The reversal of 102221111112 is 211111122201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 102221111091 and 102221111100.

It is not an unprimeable number, because it can be changed into a prime (102221111117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4522014 + ... + 4544562.

It is an arithmetic number, because the mean of its divisors is an integer number (2173594500).

Almost surely, 2^102221111112 is an apocalyptic number.

102221111112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102221111112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139110048000).

102221111112 is an abundant number, since it is smaller than the sum of its proper divisors (175998984888).

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

102221111112 is a wasteful number, since it uses less digits than its factorization.

102221111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22887 (or 22883 counting only the distinct ones).

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

Adding to 102221111112 its reverse (211111122201), we get a palindrome (313332233313).

The spelling of 102221111112 in words is "one hundred two billion, two hundred twenty-one million, one hundred eleven thousand, one hundred twelve".