101202100261 has 2 divisors, whose sum is σ = 101202100262. Its totient is φ = 101202100260.

The previous prime is 101202100243. The next prime is 101202100267. The reversal of 101202100261 is 162001202101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99562336225 + 1639764036 = 315535^2 + 40494^2 .

It is a cyclic number.

It is not a de Polignac number, because 101202100261 - 2²¹ = 101200003109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101202100267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50601050130 + 50601050131.

It is an arithmetic number, because the mean of its divisors is an integer number (50601050131).

Almost surely, 2^101202100261 is an apocalyptic number.

It is an amenable number.

101202100261 is a deficient number, since it is larger than the sum of its proper divisors (1).

101202100261 is an equidigital number, since it uses as much as digits as its factorization.

101202100261 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 16.

Adding to 101202100261 its reverse (162001202101), we get a palindrome (263203302362).

The spelling of 101202100261 in words is "one hundred one billion, two hundred two million, one hundred thousand, two hundred sixty-one".