475801142221 has 2 divisors, whose sum is σ = 475801142222. Its totient is φ = 475801142220.

The previous prime is 475801142213. The next prime is 475801142237. The reversal of 475801142221 is 122241108574.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 469889685225 + 5911456996 = 685485^2 + 76886^2 .

It is a cyclic number.

It is not a de Polignac number, because 475801142221 - 2³ = 475801142213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (475801142261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237900571110 + 237900571111.

It is an arithmetic number, because the mean of its divisors is an integer number (237900571111).

Almost surely, 2^475801142221 is an apocalyptic number.

It is an amenable number.

475801142221 is a deficient number, since it is larger than the sum of its proper divisors (1).

475801142221 is an equidigital number, since it uses as much as digits as its factorization.

475801142221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35840, while the sum is 37.

The spelling of 475801142221 in words is "four hundred seventy-five billion, eight hundred one million, one hundred forty-two thousand, two hundred twenty-one".