2101301261 has 2 divisors, whose sum is σ = 2101301262. Its totient is φ = 2101301260.

The previous prime is 2101301197. The next prime is 2101301273. The reversal of 2101301261 is 1621031012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1147109161 + 954192100 = 33869^2 + 30890^2 .

It is a cyclic number.

It is not a de Polignac number, because 2101301261 - 2⁶ = 2101301197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2101331261) 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, 1050650630 + 1050650631.

It is an arithmetic number, because the mean of its divisors is an integer number (1050650631).

Almost surely, 2^2101301261 is an apocalyptic number.

It is an amenable number.

2101301261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101301261 is an equidigital number, since it uses as much as digits as its factorization.

2101301261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 2101301261 is about 45839.9526723141. The cubic root of 2101301261 is about 1280.8436131869.

Adding to 2101301261 its reverse (1621031012), we get a palindrome (3722332273).

The spelling of 2101301261 in words is "two billion, one hundred one million, three hundred one thousand, two hundred sixty-one".