21313330122 has 48 divisors (see below), whose sum is σ = 50454061632. Its totient is φ = 5879529600.

The previous prime is 21313330099. The next prime is 21313330127. The reversal of 21313330122 is 22103331312.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (21313330127) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 266379 + ... + 337022.

It is an arithmetic number, because the mean of its divisors is an integer number (1051126284).

Almost surely, 2^21313330122 is an apocalyptic number.

21313330122 is an abundant number, since it is smaller than the sum of its proper divisors (29140731510).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21313330122 is a wasteful number, since it uses less digits than its factorization.

21313330122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603471 (or 603442 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 21313330122 its reverse (22103331312), we get a palindrome (43416661434).

The spelling of 21313330122 in words is "twenty-one billion, three hundred thirteen million, three hundred thirty thousand, one hundred twenty-two".