4120330121 has 4 divisors (see below), whose sum is σ = 4262410500. Its totient is φ = 3978249744.

The previous prime is 4120330111. The next prime is 4120330127. The reversal of 4120330121 is 1210330214.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1210330214 = 2 ⋅605165107.

It can be written as a sum of positive squares in 2 ways, for example, as 2140080121 + 1980250000 = 46261^2 + 44500^2 .

It is a cyclic number.

It is not a de Polignac number, because 4120330121 - 2²² = 4116135817 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4120330121.

It is not an unprimeable number, because it can be changed into a prime (4120330127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71040146 + ... + 71040203.

It is an arithmetic number, because the mean of its divisors is an integer number (1065602625).

Almost surely, 2^4120330121 is an apocalyptic number.

It is an amenable number.

4120330121 is a deficient number, since it is larger than the sum of its proper divisors (142080379).

4120330121 is a wasteful number, since it uses less digits than its factorization.

4120330121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142080378.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 4120330121 is about 64189.7976395003. The cubic root of 4120330121 is about 1603.1617325444.

Adding to 4120330121 its reverse (1210330214), we get a palindrome (5330660335).

The spelling of 4120330121 in words is "four billion, one hundred twenty million, three hundred thirty thousand, one hundred twenty-one".