2001013122 has 16 divisors (see below), whose sum is σ = 4012590240. Its totient is φ = 665243712.

The previous prime is 2001013121. The next prime is 2001013123. The reversal of 2001013122 is 2213101002.

It is an interprime number because it is at equal distance from previous prime (2001013121) and next prime (2001013123).

It is a junction number, because it is equal to n+sod(n) for n = 2001013098 and 2001013107.

It is not an unprimeable number, because it can be changed into a prime (2001013121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 437703 + ... + 442250.

It is an arithmetic number, because the mean of its divisors is an integer number (250786890).

Almost surely, 2^2001013122 is an apocalyptic number.

2001013122 is an abundant number, since it is smaller than the sum of its proper divisors (2011577118).

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

2001013122 is a wasteful number, since it uses less digits than its factorization.

2001013122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880337.

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

The square root of 2001013122 is about 44732.6851642063. The cubic root of 2001013122 is about 1260.1337562716.

Adding to 2001013122 its reverse (2213101002), we get a palindrome (4214114124).

The spelling of 2001013122 in words is "two billion, one million, thirteen thousand, one hundred twenty-two".