2001000010122 has 32 divisors (see below), whose sum is σ = 4487461809600. Its totient is φ = 660880735344.

The previous prime is 2001000010111. The next prime is 2001000010123. The reversal of 2001000010122 is 2210100001002.

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 (2001000010123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169973728 + ... + 169985499.

It is an arithmetic number, because the mean of its divisors is an integer number (140233181550).

Almost surely, 2^{2001000010122} is an apocalyptic number.

2001000010122 is an abundant number, since it is smaller than the sum of its proper divisors (2486461799478).

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

2001000010122 is a wasteful number, since it uses less digits than its factorization.

2001000010122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339959347 (or 339959341 counting only the distinct ones).

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

Adding to 2001000010122 its reverse (2210100001002), we get a palindrome (4211100011124).

The spelling of 2001000010122 in words is "two trillion, one billion, ten thousand, one hundred twenty-two".