10021320012 has 48 divisors (see below), whose sum is σ = 25651382400. Its totient is φ = 3019791360.

The previous prime is 10021319963. The next prime is 10021320013. The reversal of 10021320012 is 21002312001.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 10021320012.

It is not an unprimeable number, because it can be changed into a prime (10021320013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188437 + ... + 235692.

It is an arithmetic number, because the mean of its divisors is an integer number (534403800).

Almost surely, 2^10021320012 is an apocalyptic number.

10021320012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10021320012 is an abundant number, since it is smaller than the sum of its proper divisors (15630062388).

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

10021320012 is a wasteful number, since it uses less digits than its factorization.

10021320012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424326 (or 424324 counting only the distinct ones).

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

Adding to 10021320012 its reverse (21002312001), we get a palindrome (31023632013).

It can be divided in two parts, 10021 and 320012, that added together give a palindrome (330033).

The spelling of 10021320012 in words is "ten billion, twenty-one million, three hundred twenty thousand, twelve".