2102002120 has 32 divisors (see below), whose sum is σ = 4882072320. Its totient is φ = 813677760.

The previous prime is 2102002109. The next prime is 2102002139. The reversal of 2102002120 is 212002012.

It is a super-3 number, since 3×2102002120³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 2102002097 and 2102002106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 846342 + ... + 848821.

It is an arithmetic number, because the mean of its divisors is an integer number (152564760).

Almost surely, 2^2102002120 is an apocalyptic number.

2102002120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102002120 is an abundant number, since it is smaller than the sum of its proper divisors (2780070200).

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

2102002120 is a wasteful number, since it uses less digits than its factorization.

2102002120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1695205 (or 1695201 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 2102002120 is about 45847.5966654742. The cubic root of 2102002120 is about 1280.9859997174.

Adding to 2102002120 its reverse (212002012), we get a palindrome (2314004132).

The spelling of 2102002120 in words is "two billion, one hundred two million, two thousand, one hundred twenty".