21221102000122 has 8 divisors (see below), whose sum is σ = 31831673429556. Its totient is φ = 10610544190272.

The previous prime is 21221102000117. The next prime is 21221102000141. The reversal of 21221102000122 is 22100020112212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19842400979361 + 1378701020761 = 4454481^2 + 1174181^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 21221102000096 and 21221102000105.

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, 2628988 + ... + 7025224.

Almost surely, 2^{21221102000122} is an apocalyptic number.

21221102000122 is a deficient number, since it is larger than the sum of its proper divisors (10610571429434).

21221102000122 is a wasteful number, since it uses less digits than its factorization.

21221102000122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6809792.

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

Adding to 21221102000122 its reverse (22100020112212), we get a palindrome (43321122112334).

The spelling of 21221102000122 in words is "twenty-one trillion, two hundred twenty-one billion, one hundred two million, one hundred twenty-two", and thus it is an aban number.