10002021312 has 28 divisors (see below), whose sum is σ = 26463681896. Its totient is φ = 3334007040.

The previous prime is 10002021307. The next prime is 10002021313. The reversal of 10002021312 is 21312020001.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10002021313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26046739 + ... + 26047122.

Almost surely, 2^10002021312 is an apocalyptic number.

10002021312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10002021312 is an abundant number, since it is smaller than the sum of its proper divisors (16461660584).

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

10002021312 is an equidigital number, since it uses as much as digits as its factorization.

10002021312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52093876 (or 52093866 counting only the distinct ones).

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

Adding to 10002021312 its reverse (21312020001), we get a palindrome (31314041313).

The spelling of 10002021312 in words is "ten billion, two million, twenty-one thousand, three hundred twelve".