201120123361 has 2 divisors, whose sum is σ = 201120123362. Its totient is φ = 201120123360.

The previous prime is 201120123307. The next prime is 201120123433. The reversal of 201120123361 is 163321021102.

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., 186222456225 + 14897667136 = 431535^2 + 122056^2 .

It is a cyclic number.

It is not a de Polignac number, because 201120123361 - 2²⁷ = 200985905633 is a prime.

It is not a weakly prime, because it can be changed into another prime (201120123961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100560061680 + 100560061681.

It is an arithmetic number, because the mean of its divisors is an integer number (100560061681).

Almost surely, 2^201120123361 is an apocalyptic number.

It is an amenable number.

201120123361 is a deficient number, since it is larger than the sum of its proper divisors (1).

201120123361 is an equidigital number, since it uses as much as digits as its factorization.

201120123361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 201120123361 its reverse (163321021102), we get a palindrome (364441144463).

The spelling of 201120123361 in words is "two hundred one billion, one hundred twenty million, one hundred twenty-three thousand, three hundred sixty-one".