3820120201 has 6 divisors (see below), whose sum is σ = 4058051870. Its totient is φ = 3595406976.

The previous prime is 3820120189. The next prime is 3820120223. The reversal of 3820120201 is 1020210283.

It can be written as a sum of positive squares in 3 ways, for example, as 2910494601 + 909625600 = 53949^2 + 30160^2 .

It is not a de Polignac number, because 3820120201 - 2²¹ = 3818023049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3820120231) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6608916 + ... + 6609493.

Almost surely, 2^3820120201 is an apocalyptic number.

It is an amenable number.

3820120201 is a deficient number, since it is larger than the sum of its proper divisors (237931669).

3820120201 is a wasteful number, since it uses less digits than its factorization.

3820120201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13218443 (or 13218426 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 3820120201 is about 61807.1209570548. The cubic root of 3820120201 is about 1563.2400608662.

Adding to 3820120201 its reverse (1020210283), we get a palindrome (4840330484).

The spelling of 3820120201 in words is "three billion, eight hundred twenty million, one hundred twenty thousand, two hundred one".