21203321302 has 8 divisors (see below), whose sum is σ = 31907249712. Its totient is φ = 10567571400.

The previous prime is 21203321287. The next prime is 21203321309. The reversal of 21203321302 is 20312330212.

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 21203321302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21203321309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17043849 + ... + 17045092.

It is an arithmetic number, because the mean of its divisors is an integer number (3988406214).

Almost surely, 2^21203321302 is an apocalyptic number.

21203321302 is a deficient number, since it is larger than the sum of its proper divisors (10703928410).

21203321302 is a wasteful number, since it uses less digits than its factorization.

21203321302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34089254.

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

Adding to 21203321302 its reverse (20312330212), we get a palindrome (41515651514).

The spelling of 21203321302 in words is "twenty-one billion, two hundred three million, three hundred twenty-one thousand, three hundred two".