21303210122 has 8 divisors (see below), whose sum is σ = 32496422400. Its totient is φ = 10471069324.

The previous prime is 21303210109. The next prime is 21303210143. The reversal of 21303210122 is 22101230312.

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 21303210122.

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, 90267722 + ... + 90267957.

It is an arithmetic number, because the mean of its divisors is an integer number (4062052800).

Almost surely, 2^21303210122 is an apocalyptic number.

21303210122 is a deficient number, since it is larger than the sum of its proper divisors (11193212278).

21303210122 is a wasteful number, since it uses less digits than its factorization.

21303210122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180535740.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21303210122 its reverse (22101230312), we get a palindrome (43404440434).

The spelling of 21303210122 in words is "twenty-one billion, three hundred three million, two hundred ten thousand, one hundred twenty-two".