21210233102 has 16 divisors (see below), whose sum is σ = 33521769600. Its totient is φ = 10037374200.

The previous prime is 21210233089. The next prime is 21210233111. The reversal of 21210233102 is 20133201212.

It is a congruent number.

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, 225602 + ... + 305477.

It is an arithmetic number, because the mean of its divisors is an integer number (2095110600).

Almost surely, 2^21210233102 is an apocalyptic number.

21210233102 is a deficient number, since it is larger than the sum of its proper divisors (12311536498).

21210233102 is a wasteful number, since it uses less digits than its factorization.

21210233102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532151.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21210233102 its reverse (20133201212), we get a palindrome (41343434314).

The spelling of 21210233102 in words is "twenty-one billion, two hundred ten million, two hundred thirty-three thousand, one hundred two".