21222200110002 has 128 divisors (see below), whose sum is σ = 44509362036480. Its totient is φ = 6739888435200.

The previous prime is 21222200109941. The next prime is 21222200110117. The reversal of 21222200110002 is 20001100222212.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 752519502 + ... + 752547702.

It is an arithmetic number, because the mean of its divisors is an integer number (347729390910).

Almost surely, 2^{21222200110002} is an apocalyptic number.

21222200110002 is an abundant number, since it is smaller than the sum of its proper divisors (23287161926478).

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

21222200110002 is a wasteful number, since it uses less digits than its factorization.

21222200110002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28716.

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

Adding to 21222200110002 its reverse (20001100222212), we get a palindrome (41223300332214).

The spelling of 21222200110002 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred million, one hundred ten thousand, two".