21222101000122 has 16 divisors (see below), whose sum is σ = 34773813387072. Its totient is φ = 9633426483520.

The previous prime is 21222101000059. The next prime is 21222101000129. The reversal of 21222101000122 is 22100010122212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21222101000096 and 21222101000105.

It is not an unprimeable number, because it can be changed into a prime (21222101000129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 649136383 + ... + 649169074.

It is an arithmetic number, because the mean of its divisors is an integer number (2173363336692).

Almost surely, 2^{21222101000122} is an apocalyptic number.

21222101000122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21222101000122 is a deficient number, since it is larger than the sum of its proper divisors (13551712386950).

21222101000122 is a wasteful number, since it uses less digits than its factorization.

21222101000122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1298306213.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21222101000122 its reverse (22100010122212), we get a palindrome (43322111122334).

The spelling of 21222101000122 in words is "twenty-one trillion, two hundred twenty-two billion, one hundred one million, one hundred twenty-two", and thus it is an aban number.