21222110220002 has 64 divisors (see below), whose sum is σ = 35033342400000. Its totient is φ = 9596873889792.

The previous prime is 21222110219963. The next prime is 21222110220007. The reversal of 21222110220002 is 20002201122212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (21222110220007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 180510374 + ... + 180627902.

It is an arithmetic number, because the mean of its divisors is an integer number (547395975000).

Almost surely, 2^{21222110220002} is an apocalyptic number.

21222110220002 is a deficient number, since it is larger than the sum of its proper divisors (13811232179998).

21222110220002 is a wasteful number, since it uses less digits than its factorization.

21222110220002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118443.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 21222110220002 its reverse (20002201122212), we get a palindrome (41224311342214).

The spelling of 21222110220002 in words is "twenty-one trillion, two hundred twenty-two billion, one hundred ten million, two hundred twenty thousand, two".