2102122120 has 32 divisors (see below), whose sum is σ = 5405457600. Its totient is φ = 720727488.

The previous prime is 2102122103. The next prime is 2102122129. The reversal of 2102122120 is 212212012.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2102122120.

It is not an unprimeable number, because it can be changed into a prime (2102122129) 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 7 ways as a sum of consecutive naturals, for example, 3753510 + ... + 3754069.

It is an arithmetic number, because the mean of its divisors is an integer number (168920550).

Almost surely, 2^2102122120 is an apocalyptic number.

2102122120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102122120 is an abundant number, since it is smaller than the sum of its proper divisors (3303335480).

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

2102122120 is a wasteful number, since it uses less digits than its factorization.

2102122120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7507597 (or 7507593 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2102122120 is about 45848.9053304438. The cubic root of 2102122120 is about 1281.0103757465.

Adding to 2102122120 its reverse (212212012), we get a palindrome (2314334132).

The spelling of 2102122120 in words is "two billion, one hundred two million, one hundred twenty-two thousand, one hundred twenty".