221220102210112 has 14 divisors (see below), whose sum is σ = 438983640323318. Its totient is φ = 110610051105024.

The previous prime is 221220102210097. The next prime is 221220102210113. The reversal of 221220102210112 is 211012201022122.

It can be written as a sum of positive squares in only one way, i.e., 217596013290496 + 3624088919616 = 14751136^2 + 1903704^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 221220102210112.

It is not an unprimeable number, because it can be changed into a prime (221220102210113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1728282048453 + ... + 1728282048580.

Almost surely, 2^{221220102210112} is an apocalyptic number.

It is an amenable number.

221220102210112 is a deficient number, since it is larger than the sum of its proper divisors (217763538113206).

221220102210112 is an equidigital number, since it uses as much as digits as its factorization.

221220102210112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3456564097045 (or 3456564097035 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 221220102210112 its reverse (211012201022122), we get a palindrome (432232303232234).

The spelling of 221220102210112 in words is "two hundred twenty-one trillion, two hundred twenty billion, one hundred two million, two hundred ten thousand, one hundred twelve".