21200231202 has 16 divisors (see below), whose sum is σ = 42412339200. Its totient is φ = 7064764272.

The previous prime is 21200231189. The next prime is 21200231233. The reversal of 21200231202 is 20213200212.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 471577 + ... + 514572.

It is an arithmetic number, because the mean of its divisors is an integer number (2650771200).

Almost surely, 2^21200231202 is an apocalyptic number.

21200231202 is an abundant number, since it is smaller than the sum of its proper divisors (21212107998).

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

21200231202 is a wasteful number, since it uses less digits than its factorization.

21200231202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989737.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 21200231202 its reverse (20213200212), we get a palindrome (41413431414).

The spelling of 21200231202 in words is "twenty-one billion, two hundred million, two hundred thirty-one thousand, two hundred two".