210200101261 has 2 divisors, whose sum is σ = 210200101262. Its totient is φ = 210200101260.

The previous prime is 210200101219. The next prime is 210200101337. The reversal of 210200101261 is 162101002012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 191450002500 + 18750098761 = 437550^2 + 136931^2 .

It is a cyclic number.

It is not a de Polignac number, because 210200101261 - 2¹⁵ = 210200068493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210200101201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105100050630 + 105100050631.

It is an arithmetic number, because the mean of its divisors is an integer number (105100050631).

Almost surely, 2^210200101261 is an apocalyptic number.

It is an amenable number.

210200101261 is a deficient number, since it is larger than the sum of its proper divisors (1).

210200101261 is an equidigital number, since it uses as much as digits as its factorization.

210200101261 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 16.

Adding to 210200101261 its reverse (162101002012), we get a palindrome (372301103273).

The spelling of 210200101261 in words is "two hundred ten billion, two hundred million, one hundred one thousand, two hundred sixty-one".