200101102100261 has 2 divisors, whose sum is σ = 200101102100262. Its totient is φ = 200101102100260.

The previous prime is 200101102100173. The next prime is 200101102100281. The reversal of 200101102100261 is 162001201101002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 196647473841025 + 3453628259236 = 14023105^2 + 1858394^2 .

It is a cyclic number.

It is not a de Polignac number, because 200101102100261 - 2²² = 200101097905957 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 (200101102100281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100050551050130 + 100050551050131.

It is an arithmetic number, because the mean of its divisors is an integer number (100050551050131).

Almost surely, 2^{200101102100261} is an apocalyptic number.

It is an amenable number.

200101102100261 is a deficient number, since it is larger than the sum of its proper divisors (1).

200101102100261 is an equidigital number, since it uses as much as digits as its factorization.

200101102100261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 200101102100261 its reverse (162001201101002), we get a palindrome (362102303201263).

The spelling of 200101102100261 in words is "two hundred trillion, one hundred one billion, one hundred two million, one hundred thousand, two hundred sixty-one".