21222001222202 has 32 divisors (see below), whose sum is σ = 34780744535040. Its totient is φ = 9631422056880.

The previous prime is 21222001222183. The next prime is 21222001222243. The reversal of 21222001222202 is 20222210022212.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 36466553 + ... + 37043939.

It is an arithmetic number, because the mean of its divisors is an integer number (1086898266720).

Almost surely, 2^{21222001222202} is an apocalyptic number.

21222001222202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21222001222202 is a deficient number, since it is larger than the sum of its proper divisors (13558743312838).

21222001222202 is a wasteful number, since it uses less digits than its factorization.

21222001222202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579986.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 21222001222202 its reverse (20222210022212), we get a palindrome (41444211244414).

The spelling of 21222001222202 in words is "twenty-one trillion, two hundred twenty-two billion, one million, two hundred twenty-two thousand, two hundred two".