21302203202 has 16 divisors (see below), whose sum is σ = 37295043840. Its totient is φ = 8935270368.

The previous prime is 21302203187. The next prime is 21302203231. The reversal of 21302203202 is 20230220312.

It is a super-2 number, since 2×21302203202² (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 (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16186427 + ... + 16187742.

It is an arithmetic number, because the mean of its divisors is an integer number (2330940240).

Almost surely, 2^21302203202 is an apocalyptic number.

21302203202 is a deficient number, since it is larger than the sum of its proper divisors (15992840638).

21302203202 is a wasteful number, since it uses less digits than its factorization.

21302203202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32374225.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 21302203202 its reverse (20230220312), we get a palindrome (41532423514).

The spelling of 21302203202 in words is "twenty-one billion, three hundred two million, two hundred three thousand, two hundred two".