201221220100112 has 20 divisors (see below), whose sum is σ = 389872680624336. Its totient is φ = 100608915422880.

The previous prime is 201221220100097. The next prime is 201221220100129. The reversal of 201221220100112 is 211001022122102.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104934314 + ... + 106834697.

Almost surely, 2^{201221220100112} is an apocalyptic number.

It is an amenable number.

201221220100112 is a deficient number, since it is larger than the sum of its proper divisors (188651460524224).

201221220100112 is a wasteful number, since it uses less digits than its factorization.

201221220100112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211828406 (or 211828400 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 201221220100112 its reverse (211001022122102), we get a palindrome (412222242222214).

The spelling of 201221220100112 in words is "two hundred one trillion, two hundred twenty-one billion, two hundred twenty million, one hundred thousand, one hundred twelve".