102200261 has 2 divisors, whose sum is σ = 102200262. Its totient is φ = 102200260.

The previous prime is 102200239. The next prime is 102200279. The reversal of 102200261 is 162002201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71740900 + 30459361 = 8470^2 + 5519^2 .

It is a cyclic number.

It is not a de Polignac number, because 102200261 - 2¹⁸ = 101938117 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102208261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51100130 + 51100131.

It is an arithmetic number, because the mean of its divisors is an integer number (51100131).

Almost surely, 2^102200261 is an apocalyptic number.

It is an amenable number.

102200261 is a deficient number, since it is larger than the sum of its proper divisors (1).

102200261 is an equidigital number, since it uses as much as digits as its factorization.

102200261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 102200261 is about 10109.4144736478. The cubic root of 102200261 is about 467.5384524216.

Adding to 102200261 its reverse (162002201), we get a palindrome (264202462).

The spelling of 102200261 in words is "one hundred two million, two hundred thousand, two hundred sixty-one".