21222021020002 has 16 divisors (see below), whose sum is σ = 34729820812224. Its totient is φ = 9645573934000.

The previous prime is 21222021019993. The next prime is 21222021020111. The reversal of 21222021020002 is 20002012022212.

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 7 ways as a sum of consecutive naturals, for example, 39691249 + ... + 40222372.

It is an arithmetic number, because the mean of its divisors is an integer number (2170613800764).

Almost surely, 2^{21222021020002} is an apocalyptic number.

21222021020002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21222021020002 is a deficient number, since it is larger than the sum of its proper divisors (13507799792222).

21222021020002 is a wasteful number, since it uses less digits than its factorization.

21222021020002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79925705.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 21222021020002 its reverse (20002012022212), we get a palindrome (41224033042214).

The spelling of 21222021020002 in words is "twenty-one trillion, two hundred twenty-two billion, twenty-one million, twenty thousand, two".