2001102140 has 24 divisors (see below), whose sum is σ = 4204117680. Its totient is φ = 800097408.

The previous prime is 2001102121. The next prime is 2001102157. The reversal of 2001102140 is 412011002.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 29231 + ... + 69689.

It is an arithmetic number, because the mean of its divisors is an integer number (175171570).

Almost surely, 2^2001102140 is an apocalyptic number.

2001102140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001102140 is an abundant number, since it is smaller than the sum of its proper divisors (2203015540).

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

2001102140 is a wasteful number, since it uses less digits than its factorization.

2001102140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42941 (or 42939 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2001102140 is about 44733.6801526546. The cubic root of 2001102140 is about 1260.1524422933.

Adding to 2001102140 its reverse (412011002), we get a palindrome (2413113142).

The spelling of 2001102140 in words is "two billion, one million, one hundred two thousand, one hundred forty".