21020221100010 has 64 divisors (see below), whose sum is σ = 55110462511104. Its totient is φ = 5088801748800.

The previous prime is 21020221099993. The next prime is 21020221100051. The reversal of 21020221100010 is 1000112202012.

It is a super-3 number, since 3×21020221100010³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43568646 + ... + 44048465.

It is an arithmetic number, because the mean of its divisors is an integer number (861100976736).

Almost surely, 2^{21020221100010} is an apocalyptic number.

21020221100010 is an abundant number, since it is smaller than the sum of its proper divisors (34090241411094).

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

21020221100010 is a wasteful number, since it uses less digits than its factorization.

21020221100010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87617859.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21020221100010 its reverse (1000112202012), we get a palindrome (22020333302022).

The spelling of 21020221100010 in words is "twenty-one trillion, twenty billion, two hundred twenty-one million, one hundred thousand, ten".