180122112101 has 4 divisors (see below), whose sum is σ = 183520642572. Its totient is φ = 176723581632.

The previous prime is 180122112091. The next prime is 180122112133. The reversal of 180122112101 is 101211221081.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 139207341025 + 40914771076 = 373105^2 + 202274^2 .

It is a cyclic number.

It is not a de Polignac number, because 180122112101 - 2¹⁴ = 180122095717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180122112151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1699265156 + ... + 1699265261.

It is an arithmetic number, because the mean of its divisors is an integer number (45880160643).

Almost surely, 2^180122112101 is an apocalyptic number.

It is an amenable number.

180122112101 is a deficient number, since it is larger than the sum of its proper divisors (3398530471).

180122112101 is an equidigital number, since it uses as much as digits as its factorization.

180122112101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3398530470.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 180122112101 its reverse (101211221081), we get a palindrome (281333333182).

The spelling of 180122112101 in words is "one hundred eighty billion, one hundred twenty-two million, one hundred twelve thousand, one hundred one".