221001220010112 has 64 divisors (see below), whose sum is σ = 587085829982400. Its totient is φ = 73660630754304.

The previous prime is 221001220010111. The next prime is 221001220010149. The reversal of 221001220010112 is 211010022100122.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 221001220010091 and 221001220010100.

It is not an unprimeable number, because it can be changed into a prime (221001220010111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20768812 + ... + 29552427.

It is an arithmetic number, because the mean of its divisors is an integer number (9173216093475).

Almost surely, 2^{221001220010112} is an apocalyptic number.

It is an amenable number.

221001220010112 is an abundant number, since it is smaller than the sum of its proper divisors (366084609972288).

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

221001220010112 is a wasteful number, since it uses less digits than its factorization.

221001220010112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50332693 (or 50332681 counting only the distinct ones).

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

Adding to 221001220010112 its reverse (211010022100122), we get a palindrome (432011242110234).

The spelling of 221001220010112 in words is "two hundred twenty-one trillion, one billion, two hundred twenty million, ten thousand, one hundred twelve".