221121202110112 has 24 divisors (see below), whose sum is σ = 449375346225792. Its totient is φ = 106994130052800.

The previous prime is 221121202110097. The next prime is 221121202110167. The reversal of 221121202110112 is 211011202121122.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 221121202110112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111452217814 + ... + 111452219797.

It is an arithmetic number, because the mean of its divisors is an integer number (18723972759408).

Almost surely, 2^{221121202110112} is an apocalyptic number.

It is an amenable number.

221121202110112 is an abundant number, since it is smaller than the sum of its proper divisors (228254144115680).

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

221121202110112 is a wasteful number, since it uses less digits than its factorization.

221121202110112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222904437652 (or 222904437644 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 221121202110112 its reverse (211011202121122), we get a palindrome (432132404231234).

The spelling of 221121202110112 in words is "two hundred twenty-one trillion, one hundred twenty-one billion, two hundred two million, one hundred ten thousand, one hundred twelve".