21200231302 has 4 divisors (see below), whose sum is σ = 31800346956. Its totient is φ = 10600115650.

The previous prime is 21200231281. The next prime is 21200231329. The reversal of 21200231302 is 20313200212.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5300057824 + ... + 5300057827.

It is an arithmetic number, because the mean of its divisors is an integer number (7950086739).

Almost surely, 2^21200231302 is an apocalyptic number.

21200231302 is a deficient number, since it is larger than the sum of its proper divisors (10600115654).

21200231302 is a wasteful number, since it uses less digits than its factorization.

21200231302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10600115653.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21200231302 its reverse (20313200212), we get a palindrome (41513431514).

The spelling of 21200231302 in words is "twenty-one billion, two hundred million, two hundred thirty-one thousand, three hundred two".