2002012212820 has 48 divisors (see below), whose sum is σ = 4210061663808. Its totient is φ = 799693689600.

The previous prime is 2002012212803. The next prime is 2002012212821. The reversal of 2002012212820 is 282122102002.

It is a junction number, because it is equal to n+sod(n) for n = 2002012212791 and 2002012212800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002012212821) 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, 100276159 + ... + 100296121.

It is an arithmetic number, because the mean of its divisors is an integer number (87709617996).

Almost surely, 2^{2002012212820} is an apocalyptic number.

2002012212820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2002012212820 is an abundant number, since it is smaller than the sum of its proper divisors (2208049450988).

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

2002012212820 is a wasteful number, since it uses less digits than its factorization.

2002012212820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26680 (or 26678 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 2002012212820 its reverse (282122102002), we get a palindrome (2284134314822).

The spelling of 2002012212820 in words is "two trillion, two billion, twelve million, two hundred twelve thousand, eight hundred twenty".