221220102111112 has 48 divisors (see below), whose sum is σ = 455474841655680. Its totient is φ = 100663535044800.

The previous prime is 221220102111103. The next prime is 221220102111233. The reversal of 221220102111112 is 211111201022122.

It is a happy number.

221220102111112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 221220102111112.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1152188064 + ... + 1152380047.

It is an arithmetic number, because the mean of its divisors is an integer number (9489059201160).

Almost surely, 2^{221220102111112} is an apocalyptic number.

It is an amenable number.

221220102111112 is an abundant number, since it is smaller than the sum of its proper divisors (234254739544568).

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

221220102111112 is a wasteful number, since it uses less digits than its factorization.

221220102111112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2304568214 (or 2304568197 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 221220102111112 its reverse (211111201022122), we get a palindrome (432331303133234).

The spelling of 221220102111112 in words is "two hundred twenty-one trillion, two hundred twenty billion, one hundred two million, one hundred eleven thousand, one hundred twelve".