2102110120 has 32 divisors (see below), whose sum is σ = 5159725920. Its totient is φ = 764403520.

The previous prime is 2102110099. The next prime is 2102110121. The reversal of 2102110120 is 210112012.

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 = 2102110097 and 2102110106.

It is not an unprimeable number, because it can be changed into a prime (2102110121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2388322 + ... + 2389201.

It is an arithmetic number, because the mean of its divisors is an integer number (161241435).

Almost surely, 2^2102110120 is an apocalyptic number.

2102110120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102110120 is an abundant number, since it is smaller than the sum of its proper divisors (3057615800).

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

2102110120 is a wasteful number, since it uses less digits than its factorization.

2102110120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4777545 (or 4777541 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 2102110120 is about 45848.7744656278. The cubic root of 2102110120 is about 1281.0079381854.

Adding to 2102110120 its reverse (210112012), we get a palindrome (2312222132).

The spelling of 2102110120 in words is "two billion, one hundred two million, one hundred ten thousand, one hundred twenty".