120161636201 has 4 divisors (see below), whose sum is σ = 120165495252. Its totient is φ = 120157777152.

The previous prime is 120161636191. The next prime is 120161636209. The reversal of 120161636201 is 102636161021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 102636161021 = 8839 ⋅11611739.

It can be written as a sum of positive squares in 2 ways, for example, as 77684838400 + 42476797801 = 278720^2 + 206099^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120161636201 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (120161636209) 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, 1882436 + ... + 1945221.

It is an arithmetic number, because the mean of its divisors is an integer number (30041373813).

Almost surely, 2^120161636201 is an apocalyptic number.

It is an amenable number.

120161636201 is a deficient number, since it is larger than the sum of its proper divisors (3859051).

120161636201 is an equidigital number, since it uses as much as digits as its factorization.

120161636201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3859050.

The product of its (nonzero) digits is 2592, while the sum is 29.

Adding to 120161636201 its reverse (102636161021), we get a palindrome (222797797222).

The spelling of 120161636201 in words is "one hundred twenty billion, one hundred sixty-one million, six hundred thirty-six thousand, two hundred one".