201145422061 has 2 divisors, whose sum is σ = 201145422062. Its totient is φ = 201145422060.

The previous prime is 201145422053. The next prime is 201145422077. The reversal of 201145422061 is 160224541102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129388406436 + 71757015625 = 359706^2 + 267875^2 .

It is a cyclic number.

It is not a de Polignac number, because 201145422061 - 2³ = 201145422053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201145422001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100572711030 + 100572711031.

It is an arithmetic number, because the mean of its divisors is an integer number (100572711031).

Almost surely, 2^201145422061 is an apocalyptic number.

It is an amenable number.

201145422061 is a deficient number, since it is larger than the sum of its proper divisors (1).

201145422061 is an equidigital number, since it uses as much as digits as its factorization.

201145422061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 201145422061 its reverse (160224541102), we get a palindrome (361369963163).

The spelling of 201145422061 in words is "two hundred one billion, one hundred forty-five million, four hundred twenty-two thousand, sixty-one".