21310130204 has 48 divisors (see below), whose sum is σ = 42494699520. Its totient is φ = 9261551040.

The previous prime is 21310130183. The next prime is 21310130239. The reversal of 21310130204 is 40203101312.

It is a super-2 number, since 2×21310130204² (a number of 21 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 50357 + ... + 212499.

It is an arithmetic number, because the mean of its divisors is an integer number (885306240).

Almost surely, 2^21310130204 is an apocalyptic number.

It is an amenable number.

21310130204 is a deficient number, since it is larger than the sum of its proper divisors (21184569316).

21310130204 is a wasteful number, since it uses less digits than its factorization.

21310130204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162290 (or 162288 counting only the distinct ones).

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

Adding to 21310130204 its reverse (40203101312), we get a palindrome (61513231516).

The spelling of 21310130204 in words is "twenty-one billion, three hundred ten million, one hundred thirty thousand, two hundred four".