4120505501 has 12 divisors (see below), whose sum is σ = 4795748352. Its totient is φ = 3530014488.

The previous prime is 4120505491. The next prime is 4120505569. The reversal of 4120505501 is 1055050214.

It is a happy number.

It is not a de Polignac number, because 4120505501 - 2¹⁸ = 4120243357 is a prime.

It is a super-2 number, since 2×4120505501² = 33957131167542522002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4120505201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77156 + ... + 119138.

It is an arithmetic number, because the mean of its divisors is an integer number (399645696).

Almost surely, 2^4120505501 is an apocalyptic number.

It is an amenable number.

4120505501 is a deficient number, since it is larger than the sum of its proper divisors (675242851).

4120505501 is a wasteful number, since it uses less digits than its factorization.

4120505501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44000 (or 43993 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 4120505501 is about 64191.1637299091. The cubic root of 4120505501 is about 1603.1844781746.

Adding to 4120505501 its reverse (1055050214), we get a palindrome (5175555715).

The spelling of 4120505501 in words is "four billion, one hundred twenty million, five hundred five thousand, five hundred one".