21222112021102 has 8 divisors (see below), whose sum is σ = 31881473296200. Its totient is φ = 10594954255704.

The previous prime is 21222112021091. The next prime is 21222112021127. The reversal of 21222112021102 is 20112021122212.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21222112021102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8050875777 + ... + 8050878412.

It is an arithmetic number, because the mean of its divisors is an integer number (3985184162025).

Almost surely, 2^{21222112021102} is an apocalyptic number.

21222112021102 is a deficient number, since it is larger than the sum of its proper divisors (10659361275098).

21222112021102 is a wasteful number, since it uses less digits than its factorization.

21222112021102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16101754850.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 21222112021102 its reverse (20112021122212), we get a palindrome (41334133143314).

The spelling of 21222112021102 in words is "twenty-one trillion, two hundred twenty-two billion, one hundred twelve million, twenty-one thousand, one hundred two".