2002031100021 has 16 divisors (see below), whose sum is σ = 2691182204480. Its totient is φ = 1323802293120.

The previous prime is 2002031100019. The next prime is 2002031100067. The reversal of 2002031100021 is 1200011302002.

It is not a de Polignac number, because 2002031100021 - 2¹ = 2002031100019 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002031100521) 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 15 ways as a sum of consecutive naturals, for example, 1893070 + ... + 2754591.

It is an arithmetic number, because the mean of its divisors is an integer number (168198887780).

Almost surely, 2^{2002031100021} is an apocalyptic number.

It is an amenable number.

2002031100021 is a deficient number, since it is larger than the sum of its proper divisors (689151104459).

2002031100021 is a wasteful number, since it uses less digits than its factorization.

2002031100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4648836.

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

Adding to 2002031100021 its reverse (1200011302002), we get a palindrome (3202042402023).

The spelling of 2002031100021 in words is "two trillion, two billion, thirty-one million, one hundred thousand, twenty-one".