2120023121 has 8 divisors (see below), whose sum is σ = 2174939424. Its totient is φ = 2065259680.

The previous prime is 2120023117. The next prime is 2120023123. The reversal of 2120023121 is 1213200212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2120023121 - 2² = 2120023117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2120023096 and 2120023105.

It is not an unprimeable number, because it can be changed into a prime (2120023123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9851 + ... + 65856.

It is an arithmetic number, because the mean of its divisors is an integer number (271867428).

Almost surely, 2^2120023121 is an apocalyptic number.

It is an amenable number.

2120023121 is a deficient number, since it is larger than the sum of its proper divisors (54916303).

2120023121 is an equidigital number, since it uses as much as digits as its factorization.

2120023121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76431.

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

The square root of 2120023121 is about 46043.7088102164. The cubic root of 2120023121 is about 1284.6363278163.

Adding to 2120023121 its reverse (1213200212), we get a palindrome (3333223333).

The spelling of 2120023121 in words is "two billion, one hundred twenty million, twenty-three thousand, one hundred twenty-one".