221534456130671 has 2 divisors, whose sum is σ = 221534456130672. Its totient is φ = 221534456130670.

The previous prime is 221534456130613. The next prime is 221534456130683. The reversal of 221534456130671 is 176031654435122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221534456130671 - 2³⁰ = 221533382388847 is a prime.

It is a super-2 number, since 2×221534456130671² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221534456130601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110767228065335 + 110767228065336.

It is an arithmetic number, because the mean of its divisors is an integer number (110767228065336).

Almost surely, 2^{221534456130671} is an apocalyptic number.

221534456130671 is a deficient number, since it is larger than the sum of its proper divisors (1).

221534456130671 is an equidigital number, since it uses as much as digits as its factorization.

221534456130671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3628800, while the sum is 50.

The spelling of 221534456130671 in words is "two hundred twenty-one trillion, five hundred thirty-four billion, four hundred fifty-six million, one hundred thirty thousand, six hundred seventy-one".