2002020012 has 18 divisors (see below), whose sum is σ = 5060661788. Its totient is φ = 667339992.

The previous prime is 2002019947. The next prime is 2002020029. The reversal of 2002020012 is 2100202002.

It is a tau number, because it is divible by the number of its divisors (18).

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

It is a junction number, because it is equal to n+sod(n) for n = 2002019976 and 2002020003.

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 5 ways as a sum of consecutive naturals, for example, 27805798 + ... + 27805869.

Almost surely, 2^2002020012 is an apocalyptic number.

It is an amenable number.

2002020012 is an abundant number, since it is smaller than the sum of its proper divisors (3058641776).

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

2002020012 is a wasteful number, since it uses less digits than its factorization.

2002020012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55611677 (or 55611672 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 2002020012 is about 44743.9382710105. The cubic root of 2002020012 is about 1260.3450831082.

Adding to 2002020012 its reverse (2100202002), we get a palindrome (4102222014).

The spelling of 2002020012 in words is "two billion, two million, twenty thousand, twelve".