21222110220022 has 8 divisors (see below), whose sum is σ = 31838372802216. Its totient is φ = 10609319285952.

The previous prime is 21222110220007. The next prime is 21222110220037. The reversal of 21222110220022 is 22002201122212.

It is an interprime number because it is at equal distance from previous prime (21222110220007) and next prime (21222110220037).

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

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, 867896748 + ... + 867921199.

It is an arithmetic number, because the mean of its divisors is an integer number (3979796600277).

Almost surely, 2^{21222110220022} is an apocalyptic number.

21222110220022 is a deficient number, since it is larger than the sum of its proper divisors (10616262582194).

21222110220022 is a wasteful number, since it uses less digits than its factorization.

21222110220022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1735824062.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 21222110220022 its reverse (22002201122212), we get a palindrome (43224311342234).

The spelling of 21222110220022 in words is "twenty-one trillion, two hundred twenty-two billion, one hundred ten million, two hundred twenty thousand, twenty-two".