2002101020 has 24 divisors (see below), whose sum is σ = 4206749568. Its totient is φ = 800395200.

The previous prime is 2002101019. The next prime is 2002101071. The reversal of 2002101020 is 201012002.

It is a junction number, because it is equal to n+sod(n) for n = 2002100989 and 2002101007.

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, 10325 + ... + 64115.

It is an arithmetic number, because the mean of its divisors is an integer number (175281232).

Almost surely, 2^2002101020 is an apocalyptic number.

2002101020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2002101020 is an abundant number, since it is smaller than the sum of its proper divisors (2204648548).

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

2002101020 is a wasteful number, since it uses less digits than its factorization.

2002101020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55661 (or 55659 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 2002101020 is about 44744.8435017936. The cubic root of 2002101020 is about 1260.3620820487.

Adding to 2002101020 its reverse (201012002), we get a palindrome (2203113022).

The spelling of 2002101020 in words is "two billion, two million, one hundred one thousand, twenty".