2123100120 has 64 divisors (see below), whose sum is σ = 6473737440. Its totient is φ = 556876800.

The previous prime is 2123100047. The next prime is 2123100127. The reversal of 2123100120 is 210013212.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 2123100096 and 2123100105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123100127) 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, 137701 + ... + 152340.

Almost surely, 2^2123100120 is an apocalyptic number.

2123100120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2123100120 is an abundant number, since it is smaller than the sum of its proper divisors (4350637320).

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

2123100120 is a wasteful number, since it uses less digits than its factorization.

2123100120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290116 (or 290112 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 2123100120 is about 46077.1105864940. The cubic root of 2123100120 is about 1285.2575339127.

Adding to 2123100120 its reverse (210013212), we get a palindrome (2333113332).

The spelling of 2123100120 in words is "two billion, one hundred twenty-three million, one hundred thousand, one hundred twenty".