10000221312 has 32 divisors (see below), whose sum is σ = 26563088880. Its totient is φ = 3333406976.

The previous prime is 10000221307. The next prime is 10000221323. The reversal of 10000221312 is 21312200001.

It is a tau number, because it is divible by the number of its divisors (32).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13020738 + ... + 13021505.

Almost surely, 2^10000221312 is an apocalyptic number.

10000221312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10000221312 is an abundant number, since it is smaller than the sum of its proper divisors (16562867568).

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

10000221312 is an equidigital number, since it uses as much as digits as its factorization.

10000221312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26042260 (or 26042248 counting only the distinct ones).

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

Adding to 10000221312 its reverse (21312200001), we get a palindrome (31312421313).

The spelling of 10000221312 in words is "ten billion, two hundred twenty-one thousand, three hundred twelve".