441201421261 has 2 divisors, whose sum is σ = 441201421262. Its totient is φ = 441201421260.

The previous prime is 441201421187. The next prime is 441201421273. The reversal of 441201421261 is 162124102144.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 313173425161 + 128027996100 = 559619^2 + 357810^2 .

It is a cyclic number.

It is not a de Polignac number, because 441201421261 - 2⁹ = 441201420749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (441201421561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220600710630 + 220600710631.

It is an arithmetic number, because the mean of its divisors is an integer number (220600710631).

Almost surely, 2^441201421261 is an apocalyptic number.

It is an amenable number.

441201421261 is a deficient number, since it is larger than the sum of its proper divisors (1).

441201421261 is an equidigital number, since it uses as much as digits as its factorization.

441201421261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 28.

The spelling of 441201421261 in words is "four hundred forty-one billion, two hundred one million, four hundred twenty-one thousand, two hundred sixty-one".