21130003242012 has 48 divisors (see below), whose sum is σ = 57720984475392. Its totient is φ = 5889896373120.

The previous prime is 21130003241981. The next prime is 21130003242037. The reversal of 21130003242012 is 21024230003112.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 21130003242012.

It is a congruent number.

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, 3067650918 + ... + 3067657805.

It is an arithmetic number, because the mean of its divisors is an integer number (1202520509904).

Almost surely, 2^{21130003242012} is an apocalyptic number.

It is an amenable number.

21130003242012 is an abundant number, since it is smaller than the sum of its proper divisors (36590981233380).

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

21130003242012 is a wasteful number, since it uses less digits than its factorization.

21130003242012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6135308778 (or 6135308776 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21130003242012 its reverse (21024230003112), we get a palindrome (42154233245124).

The spelling of 21130003242012 in words is "twenty-one trillion, one hundred thirty billion, three million, two hundred forty-two thousand, twelve".