21330322102 has 4 divisors (see below), whose sum is σ = 31995483156. Its totient is φ = 10665161050.

The previous prime is 21330322073. The next prime is 21330322109. The reversal of 21330322102 is 20122303312.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 21330322102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21330322109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5332580524 + ... + 5332580527.

It is an arithmetic number, because the mean of its divisors is an integer number (7998870789).

Almost surely, 2^21330322102 is an apocalyptic number.

21330322102 is a deficient number, since it is larger than the sum of its proper divisors (10665161054).

21330322102 is a wasteful number, since it uses less digits than its factorization.

21330322102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10665161053.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21330322102 its reverse (20122303312), we get a palindrome (41452625414).

The spelling of 21330322102 in words is "twenty-one billion, three hundred thirty million, three hundred twenty-two thousand, one hundred two".