21003203202 has 16 divisors (see below), whose sum is σ = 42126772800. Its totient is φ = 6981006672.

The previous prime is 21003203153. The next prime is 21003203213. The reversal of 21003203202 is 20230230012.

It is a super-2 number, since 2×21003203202² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5012998 + ... + 5017185.

It is an arithmetic number, because the mean of its divisors is an integer number (2632923300).

Almost surely, 2^21003203202 is an apocalyptic number.

21003203202 is an abundant number, since it is smaller than the sum of its proper divisors (21123569598).

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

21003203202 is a wasteful number, since it uses less digits than its factorization.

21003203202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10030537.

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 21003203202 its reverse (20230230012), we get a palindrome (41233433214).

The spelling of 21003203202 in words is "twenty-one billion, three million, two hundred three thousand, two hundred two".