10012110121000 has 128 divisors (see below), whose sum is σ = 25263182599200. Its totient is φ = 3691993036800.

The previous prime is 10012110120919. The next prime is 10012110121001. The reversal of 10012110121000 is 12101121001.

It can be written as a sum of positive squares in 16 ways, for example, as 3872528079876 + 6139582041124 = 1967874^2 + 2477818^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (10012110121001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9550836 + ... + 10547164.

Almost surely, 2^{10012110121000} is an apocalyptic number.

10012110121000 is a gapful number since it is divisible by the number (10) 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 10012110121000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12631591299600).

10012110121000 is an abundant number, since it is smaller than the sum of its proper divisors (15251072478200).

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

10012110121000 is a wasteful number, since it uses less digits than its factorization.

10012110121000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997136 (or 997122 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 10012110121000 its reverse (12101121001), we get a palindrome (10024211242001).

The spelling of 10012110121000 in words is "ten trillion, twelve billion, one hundred ten million, one hundred twenty-one thousand".