221021100020112 has 60 divisors (see below), whose sum is σ = 664190958740976. Its totient is φ = 63148885719360.

The previous prime is 221021100020087. The next prime is 221021100020143. The reversal of 221021100020112 is 211020001120122.

It is a junction number, because it is equal to n+sod(n) for n = 221021100020091 and 221021100020100.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46985775714 + ... + 46985780417.

Almost surely, 2^{221021100020112} is an apocalyptic number.

It is an amenable number.

221021100020112 is an abundant number, since it is smaller than the sum of its proper divisors (443169858720864).

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

221021100020112 is a wasteful number, since it uses less digits than its factorization.

221021100020112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93971556156 (or 93971556143 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 221021100020112 its reverse (211020001120122), we get a palindrome (432041101140234).

The spelling of 221021100020112 in words is "two hundred twenty-one trillion, twenty-one billion, one hundred million, twenty thousand, one hundred twelve".