4081260221 has 2 divisors, whose sum is σ = 4081260222. Its totient is φ = 4081260220.

The previous prime is 4081260191. The next prime is 4081260263. The reversal of 4081260221 is 1220621804.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2415722500 + 1665537721 = 49150^2 + 40811^2 .

It is a cyclic number.

It is not a de Polignac number, because 4081260221 - 2¹⁰ = 4081259197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4083260221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2040630110 + 2040630111.

It is an arithmetic number, because the mean of its divisors is an integer number (2040630111).

Almost surely, 2^4081260221 is an apocalyptic number.

It is an amenable number.

4081260221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4081260221 is an equidigital number, since it uses as much as digits as its factorization.

4081260221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 4081260221 is about 63884.7416915808. The cubic root of 4081260221 is about 1598.0784511478.

The spelling of 4081260221 in words is "four billion, eighty-one million, two hundred sixty thousand, two hundred twenty-one".