200123101 has 2 divisors, whose sum is σ = 200123102. Its totient is φ = 200123100.

The previous prime is 200123083. The next prime is 200123107. The reversal of 200123101 is 101321002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141967225 + 58155876 = 11915^2 + 7626^2 .

It is a cyclic number.

It is not a de Polignac number, because 200123101 - 2¹⁵ = 200090333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200123107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100061550 + 100061551.

It is an arithmetic number, because the mean of its divisors is an integer number (100061551).

Almost surely, 2^200123101 is an apocalyptic number.

It is an amenable number.

200123101 is a deficient number, since it is larger than the sum of its proper divisors (1).

200123101 is an equidigital number, since it uses as much as digits as its factorization.

200123101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 200123101 is about 14146.4872318184. The cubic root of 200123101 is about 584.9235062034.

Adding to 200123101 its reverse (101321002), we get a palindrome (301444103).

The spelling of 200123101 in words is "two hundred million, one hundred twenty-three thousand, one hundred one".