21102130030 has 64 divisors (see below), whose sum is σ = 40199639040. Its totient is φ = 7966393344.

The previous prime is 21102130019. The next prime is 21102130031. The reversal of 21102130030 is 3003120112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21102130031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1589982 + ... + 1603198.

It is an arithmetic number, because the mean of its divisors is an integer number (628119360).

Almost surely, 2^21102130030 is an apocalyptic number.

21102130030 is a deficient number, since it is larger than the sum of its proper divisors (19097509010).

21102130030 is a wasteful number, since it uses less digits than its factorization.

21102130030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13393.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 21102130030 its reverse (3003120112), we get a palindrome (24105250142).

The spelling of 21102130030 in words is "twenty-one billion, one hundred two million, one hundred thirty thousand, thirty".