21022102221002 has 8 divisors (see below), whose sum is σ = 31533204100512. Its totient is φ = 10511034187500.

The previous prime is 21022102220983. The next prime is 21022102221007. The reversal of 21022102221002 is 20012220122012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (21022102221007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6847124 + ... + 9430127.

It is an arithmetic number, because the mean of its divisors is an integer number (3941650512564).

Almost surely, 2^{21022102221002} is an apocalyptic number.

21022102221002 is a deficient number, since it is larger than the sum of its proper divisors (10511101879510).

21022102221002 is a wasteful number, since it uses less digits than its factorization.

21022102221002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16923004.

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

Adding to 21022102221002 its reverse (20012220122012), we get a palindrome (41034322343014).

The spelling of 21022102221002 in words is "twenty-one trillion, twenty-two billion, one hundred two million, two hundred twenty-one thousand, two".