21222003122 has 8 divisors (see below), whose sum is σ = 31936696176. Its totient is φ = 10576437732.

The previous prime is 21222003113. The next prime is 21222003133. The reversal of 21222003122 is 22130022212.

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 21222003122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17281148 + ... + 17282375.

It is an arithmetic number, because the mean of its divisors is an integer number (3992087022).

Almost surely, 2^21222003122 is an apocalyptic number.

21222003122 is a deficient number, since it is larger than the sum of its proper divisors (10714693054).

21222003122 is a wasteful number, since it uses less digits than its factorization.

21222003122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34563832.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 21222003122 its reverse (22130022212), we get a palindrome (43352025334).

The spelling of 21222003122 in words is "twenty-one billion, two hundred twenty-two million, three thousand, one hundred twenty-two".