4405125401221 has 2 divisors, whose sum is σ = 4405125401222. Its totient is φ = 4405125401220.

The previous prime is 4405125401207. The next prime is 4405125401231. The reversal of 4405125401221 is 1221045215044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4261210632900 + 143914768321 = 2064270^2 + 379361^2 .

It is a cyclic number.

It is not a de Polignac number, because 4405125401221 - 2¹³ = 4405125393029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4405125401231) 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, 2202562700610 + 2202562700611.

It is an arithmetic number, because the mean of its divisors is an integer number (2202562700611).

Almost surely, 2^{4405125401221} is an apocalyptic number.

It is an amenable number.

4405125401221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4405125401221 is an equidigital number, since it uses as much as digits as its factorization.

4405125401221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12800, while the sum is 31.

The spelling of 4405125401221 in words is "four trillion, four hundred five billion, one hundred twenty-five million, four hundred one thousand, two hundred twenty-one".