21102003202 has 32 divisors (see below), whose sum is σ = 38314591488. Its totient is φ = 8509111296.

The previous prime is 21102003199. The next prime is 21102003203. The reversal of 21102003202 is 20230020112.

It is not an unprimeable number, because it can be changed into a prime (21102003203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 884778 + ... + 908314.

It is an arithmetic number, because the mean of its divisors is an integer number (1197330984).

Almost surely, 2^21102003202 is an apocalyptic number.

21102003202 is a deficient number, since it is larger than the sum of its proper divisors (17212588286).

21102003202 is a wasteful number, since it uses less digits than its factorization.

21102003202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27330.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 21102003202 its reverse (20230020112), we get a palindrome (41332023314).

The spelling of 21102003202 in words is "twenty-one billion, one hundred two million, three thousand, two hundred two".