2100106720 has 24 divisors (see below), whose sum is σ = 4961502504. Its totient is φ = 840042624.

The previous prime is 2100106699. The next prime is 2100106721. The reversal of 2100106720 is 276010012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100106721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6562674 + ... + 6562993.

It is an arithmetic number, because the mean of its divisors is an integer number (206729271).

Almost surely, 2^2100106720 is an apocalyptic number.

2100106720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2100106720 is an abundant number, since it is smaller than the sum of its proper divisors (2861395784).

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

2100106720 is a wasteful number, since it uses less digits than its factorization.

2100106720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13125682 (or 13125674 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 2100106720 is about 45826.9213454275. The cubic root of 2100106720 is about 1280.6008572246.

Adding to 2100106720 its reverse (276010012), we get a palindrome (2376116732).

The spelling of 2100106720 in words is "two billion, one hundred million, one hundred six thousand, seven hundred twenty".