21220220110002 has 16 divisors (see below), whose sum is σ = 42449283878400. Its totient is φ = 7071932760272.

The previous prime is 21220220109989. The next prime is 21220220110079. The reversal of 21220220110002 is 20001102202212.

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 7 ways as a sum of consecutive naturals, for example, 368454573 + ... + 368512160.

It is an arithmetic number, because the mean of its divisors is an integer number (2653080242400).

Almost surely, 2^{21220220110002} is an apocalyptic number.

21220220110002 is an abundant number, since it is smaller than the sum of its proper divisors (21229063768398).

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

21220220110002 is a wasteful number, since it uses less digits than its factorization.

21220220110002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736971537.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21220220110002 its reverse (20001102202212), we get a palindrome (41221322312214).

The spelling of 21220220110002 in words is "twenty-one trillion, two hundred twenty billion, two hundred twenty million, one hundred ten thousand, two".