221120020002 has 32 divisors (see below), whose sum is σ = 512960735232. Its totient is φ = 62234205264.

The previous prime is 221120019971. The next prime is 221120020007. The reversal of 221120020002 is 200020021122.

It is a self number, because there is not a number n which added to its sum of digits gives 221120020002.

It is not an unprimeable number, because it can be changed into a prime (221120020007) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 39286458 + ... + 39292085.

It is an arithmetic number, because the mean of its divisors is an integer number (16030022976).

Almost surely, 2^221120020002 is an apocalyptic number.

221120020002 is an abundant number, since it is smaller than the sum of its proper divisors (291840715230).

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

221120020002 is a wasteful number, since it uses less digits than its factorization.

221120020002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78578622.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 221120020002 its reverse (200020021122), we get a palindrome (421140041124).

The spelling of 221120020002 in words is "two hundred twenty-one billion, one hundred twenty million, twenty thousand, two".