10000121010 has 128 divisors (see below), whose sum is σ = 27769651200. Its totient is φ = 2280748800.

The previous prime is 10000121009. The next prime is 10000121029. The reversal of 10000121010 is 1012100001.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a self number, because there is not a number n which added to its sum of digits gives 10000121010.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 452191 + ... + 473789.

It is an arithmetic number, because the mean of its divisors is an integer number (216950400).

Almost surely, 2^10000121010 is an apocalyptic number.

10000121010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 10000121010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13884825600).

10000121010 is an abundant number, since it is smaller than the sum of its proper divisors (17769530190).

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

10000121010 is a wasteful number, since it uses less digits than its factorization.

10000121010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21704.

The product of its (nonzero) digits is 2, while the sum is 6.

Adding to 10000121010 its reverse (1012100001), we get a palindrome (11012221011).

The spelling of 10000121010 in words is "ten billion, one hundred twenty-one thousand, ten".