10121021312 has 32 divisors (see below), whose sum is σ = 20172081000. Its totient is φ = 5058224640.

The previous prime is 10121021311. The next prime is 10121021321. The reversal of 10121021312 is 21312012101.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10121021311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 286814 + ... + 320162.

Almost surely, 2^10121021312 is an apocalyptic number.

It is an amenable number.

10121021312 is a deficient number, since it is larger than the sum of its proper divisors (10051059688).

10121021312 is an equidigital number, since it uses as much as digits as its factorization.

10121021312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35734 (or 35722 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 10121021312 its reverse (21312012101), we get a palindrome (31433033413).

The spelling of 10121021312 in words is "ten billion, one hundred twenty-one million, twenty-one thousand, three hundred twelve".