10011221312 has 56 divisors (see below), whose sum is σ = 20743529760. Its totient is φ = 4787740160.

The previous prime is 10011221281. The next prime is 10011221317. The reversal of 10011221312 is 21312211001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10011221317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173387 + ... + 223797.

Almost surely, 2^10011221312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10011221312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10371764880).

10011221312 is an abundant number, since it is smaller than the sum of its proper divisors (10732308448).

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

10011221312 is a wasteful number, since it uses less digits than its factorization.

10011221312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50559 (or 50549 counting only the distinct ones).

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

Adding to 10011221312 its reverse (21312211001), we get a palindrome (31323432313).

The spelling of 10011221312 in words is "ten billion, eleven million, two hundred twenty-one thousand, three hundred twelve".