21110221120002 has 64 divisors (see below), whose sum is σ = 48834598063104. Its totient is φ = 5958662656320.

The previous prime is 21110221119989. The next prime is 21110221120003. The reversal of 21110221120002 is 20002112201112.

It is not an unprimeable number, because it can be changed into a prime (21110221120003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 199105668 + ... + 199211664.

It is an arithmetic number, because the mean of its divisors is an integer number (763040594736).

Almost surely, 2^{21110221120002} is an apocalyptic number.

21110221120002 is an abundant number, since it is smaller than the sum of its proper divisors (27724376943102).

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

21110221120002 is a wasteful number, since it uses less digits than its factorization.

21110221120002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163223.

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

Adding to 21110221120002 its reverse (20002112201112), we get a palindrome (41112333321114).

The spelling of 21110221120002 in words is "twenty-one trillion, one hundred ten billion, two hundred twenty-one million, one hundred twenty thousand, two".