4101220261 has 2 divisors, whose sum is σ = 4101220262. Its totient is φ = 4101220260.

The previous prime is 4101220219. The next prime is 4101220307. The reversal of 4101220261 is 1620221014.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3883657761 + 217562500 = 62319^2 + 14750^2 .

It is a cyclic number.

It is not a de Polignac number, because 4101220261 - 2¹⁷ = 4101089189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4101220961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2050610130 + 2050610131.

It is an arithmetic number, because the mean of its divisors is an integer number (2050610131).

Almost surely, 2^4101220261 is an apocalyptic number.

It is an amenable number.

4101220261 is a deficient number, since it is larger than the sum of its proper divisors (1).

4101220261 is an equidigital number, since it uses as much as digits as its factorization.

4101220261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 4101220261 is about 64040.7703029875. The cubic root of 4101220261 is about 1600.6794329253.

Adding to 4101220261 its reverse (1620221014), we get a palindrome (5721441275).

The spelling of 4101220261 in words is "four billion, one hundred one million, two hundred twenty thousand, two hundred sixty-one".