10021000122 has 96 divisors (see below), whose sum is σ = 25660582272. Its totient is φ = 2767070592.

The previous prime is 10021000091. The next prime is 10021000127. The reversal of 10021000122 is 22100012001.

10021000122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (10021000127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 436228 + ... + 458624.

It is an arithmetic number, because the mean of its divisors is an integer number (267297732).

Almost surely, 2^10021000122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10021000122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12830291136).

10021000122 is an abundant number, since it is smaller than the sum of its proper divisors (15639582150).

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

10021000122 is a wasteful number, since it uses less digits than its factorization.

10021000122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22532 (or 22529 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 10021000122 its reverse (22100012001), we get a palindrome (32121012123).

The spelling of 10021000122 in words is "ten billion, twenty-one million, one hundred twenty-two", and thus it is an aban number.