21222101011022 has 4 divisors (see below), whose sum is σ = 31833151516536. Its totient is φ = 10611050505510.

The previous prime is 21222101011019. The next prime is 21222101011031. The reversal of 21222101011022 is 22011010122212.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5305525252754 + ... + 5305525252757.

It is an arithmetic number, because the mean of its divisors is an integer number (7958287879134).

Almost surely, 2^{21222101011022} is an apocalyptic number.

21222101011022 is a deficient number, since it is larger than the sum of its proper divisors (10611050505514).

21222101011022 is a wasteful number, since it uses less digits than its factorization.

21222101011022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10611050505513.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21222101011022 its reverse (22011010122212), we get a palindrome (43233111133234).

The spelling of 21222101011022 in words is "twenty-one trillion, two hundred twenty-two billion, one hundred one million, eleven thousand, twenty-two".