2106122820 has 48 divisors (see below), whose sum is σ = 5902460928. Its totient is φ = 561126400.

The previous prime is 2106122797. The next prime is 2106122827. The reversal of 2106122820 is 282216012.

It is not an unprimeable number, because it can be changed into a prime (2106122827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53812 + ... + 84308.

It is an arithmetic number, because the mean of its divisors is an integer number (122967936).

Almost surely, 2^2106122820 is an apocalyptic number.

2106122820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2106122820 is an abundant number, since it is smaller than the sum of its proper divisors (3796338108).

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

2106122820 is a wasteful number, since it uses less digits than its factorization.

2106122820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31660 (or 31658 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 2106122820 is about 45892.5137685876. The cubic root of 2106122820 is about 1281.8225217809.

Adding to 2106122820 its reverse (282216012), we get a palindrome (2388338832).

The spelling of 2106122820 in words is "two billion, one hundred six million, one hundred twenty-two thousand, eight hundred twenty".