221475147071 has 2 divisors, whose sum is σ = 221475147072. Its totient is φ = 221475147070.

The previous prime is 221475147041. The next prime is 221475147109. The reversal of 221475147071 is 170741574122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221475147071 - 2⁶ = 221475147007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221475147001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110737573535 + 110737573536.

It is an arithmetic number, because the mean of its divisors is an integer number (110737573536).

Almost surely, 2^221475147071 is an apocalyptic number.

221475147071 is a deficient number, since it is larger than the sum of its proper divisors (1).

221475147071 is an equidigital number, since it uses as much as digits as its factorization.

221475147071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 109760, while the sum is 41.

The spelling of 221475147071 in words is "two hundred twenty-one billion, four hundred seventy-five million, one hundred forty-seven thousand, seventy-one".