201130401161 has 2 divisors, whose sum is σ = 201130401162. Its totient is φ = 201130401160.

The previous prime is 201130401103. The next prime is 201130401221. The reversal of 201130401161 is 161104031102.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 157676497225 + 43453903936 = 397085^2 + 208456^2 .

It is a cyclic number.

It is not a de Polignac number, because 201130401161 - 2⁶ = 201130401097 is a prime.

It is not a weakly prime, because it can be changed into another prime (201130001161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100565200580 + 100565200581.

It is an arithmetic number, because the mean of its divisors is an integer number (100565200581).

Almost surely, 2^201130401161 is an apocalyptic number.

It is an amenable number.

201130401161 is a deficient number, since it is larger than the sum of its proper divisors (1).

201130401161 is an equidigital number, since it uses as much as digits as its factorization.

201130401161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 201130401161 its reverse (161104031102), we get a palindrome (362234432263).

The spelling of 201130401161 in words is "two hundred one billion, one hundred thirty million, four hundred one thousand, one hundred sixty-one".