4120330021 has 16 divisors (see below), whose sum is σ = 4248376704. Its totient is φ = 3994493184.

The previous prime is 4120329979. The next prime is 4120330043. The reversal of 4120330021 is 1200330214.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 4120330021 - 2³¹ = 1972846373 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4120329977 and 4120330004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4120330061) 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, 4191096 + ... + 4192078.

It is an arithmetic number, because the mean of its divisors is an integer number (265523544).

Almost surely, 2^4120330021 is an apocalyptic number.

It is an amenable number.

4120330021 is a deficient number, since it is larger than the sum of its proper divisors (128046683).

4120330021 is an equidigital number, since it uses as much as digits as its factorization.

4120330021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1980.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 4120330021 is about 64189.7968605603. The cubic root of 4120330021 is about 1603.1617195748.

Adding to 4120330021 its reverse (1200330214), we get a palindrome (5320660235).

The spelling of 4120330021 in words is "four billion, one hundred twenty million, three hundred thirty thousand, twenty-one".