180201101 has 2 divisors, whose sum is σ = 180201102. Its totient is φ = 180201100.

The previous prime is 180201097. The next prime is 180201107. The reversal of 180201101 is 101102081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114169225 + 66031876 = 10685^2 + 8126^2 .

It is an emirp because it is prime and its reverse (101102081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 180201101 - 2² = 180201097 is a prime.

It is a super-2 number, since 2×180201101² = 64944873603224402, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (180201107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90100550 + 90100551.

It is an arithmetic number, because the mean of its divisors is an integer number (90100551).

Almost surely, 2^180201101 is an apocalyptic number.

It is an amenable number.

180201101 is a deficient number, since it is larger than the sum of its proper divisors (1).

180201101 is an equidigital number, since it uses as much as digits as its factorization.

180201101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 14.

The square root of 180201101 is about 13423.9003646481. The cubic root of 180201101 is about 564.8318093888.

Adding to 180201101 its reverse (101102081), we get a palindrome (281303182).

The spelling of 180201101 in words is "one hundred eighty million, two hundred one thousand, one hundred one".