10001223012 has 144 divisors (see below), whose sum is σ = 27151669440. Its totient is φ = 2840985600.

The previous prime is 10001222999. The next prime is 10001223017. The reversal of 10001223012 is 21032210001.

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

It is not an unprimeable number, because it can be changed into a prime (10001223017) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15602212 + ... + 15602852.

It is an arithmetic number, because the mean of its divisors is an integer number (188553260).

Almost surely, 2^10001223012 is an apocalyptic number.

10001223012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10001223012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13575834720).

10001223012 is an abundant number, since it is smaller than the sum of its proper divisors (17150446428).

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

10001223012 is a wasteful number, since it uses less digits than its factorization.

10001223012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102 (or 1083 counting only the distinct ones).

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

Adding to 10001223012 its reverse (21032210001), we get a palindrome (31033433013).

The spelling of 10001223012 in words is "ten billion, one million, two hundred twenty-three thousand, twelve".