221001111020112 has 20 divisors (see below), whose sum is σ = 570919536802080. Its totient is φ = 73667037006688.

The previous prime is 221001111020111. The next prime is 221001111020189. The reversal of 221001111020112 is 211020111100122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 221001111020091 and 221001111020100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221001111020111) 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, 2302094906412 + ... + 2302094906507.

It is an arithmetic number, because the mean of its divisors is an integer number (28545976840104).

Almost surely, 2^{221001111020112} is an apocalyptic number.

It is an amenable number.

221001111020112 is an abundant number, since it is smaller than the sum of its proper divisors (349918425781968).

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

221001111020112 is a wasteful number, since it uses less digits than its factorization.

221001111020112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4604189812930 (or 4604189812924 counting only the distinct ones).

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

Adding to 221001111020112 its reverse (211020111100122), we get a palindrome (432021222120234).

The spelling of 221001111020112 in words is "two hundred twenty-one trillion, one billion, one hundred eleven million, twenty thousand, one hundred twelve".