21102130002 has 32 divisors (see below), whose sum is σ = 43094803392. Its totient is φ = 6887026944.

The previous prime is 21102129989. The next prime is 21102130019. The reversal of 21102130002 is 20003120112.

It is a self number, because there is not a number n which added to its sum of digits gives 21102130002.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115828 + ... + 235839.

It is an arithmetic number, because the mean of its divisors is an integer number (1346712606).

Almost surely, 2^21102130002 is an apocalyptic number.

21102130002 is an abundant number, since it is smaller than the sum of its proper divisors (21992673390).

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

21102130002 is a wasteful number, since it uses less digits than its factorization.

21102130002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351882.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 21102130002 its reverse (20003120112), we get a palindrome (41105250114).

The spelling of 21102130002 in words is "twenty-one billion, one hundred two million, one hundred thirty thousand, two".