2123012120 has 96 divisors (see below), whose sum is σ = 5071079520. Its totient is φ = 799787520.

The previous prime is 2123012119. The next prime is 2123012147. The reversal of 2123012120 is 212103212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2123012095 and 2123012104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3364205 + ... + 3364835.

It is an arithmetic number, because the mean of its divisors is an integer number (52823745).

Almost surely, 2^2123012120 is an apocalyptic number.

2123012120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2123012120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2535539760).

2123012120 is an abundant number, since it is smaller than the sum of its proper divisors (2948067400).

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

2123012120 is a wasteful number, since it uses less digits than its factorization.

2123012120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913 (or 890 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2123012120 is about 46076.1556556100. The cubic root of 2123012120 is about 1285.2397761969.

Adding to 2123012120 its reverse (212103212), we get a palindrome (2335115332).

The spelling of 2123012120 in words is "two billion, one hundred twenty-three million, twelve thousand, one hundred twenty".