221430672125423 has 2 divisors, whose sum is σ = 221430672125424. Its totient is φ = 221430672125422.

The previous prime is 221430672125357. The next prime is 221430672125503. The reversal of 221430672125423 is 324521276034122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221430672125423 - 2⁸ = 221430672125167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221430672125723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110715336062711 + 110715336062712.

It is an arithmetic number, because the mean of its divisors is an integer number (110715336062712).

Almost surely, 2^{221430672125423} is an apocalyptic number.

221430672125423 is a deficient number, since it is larger than the sum of its proper divisors (1).

221430672125423 is an equidigital number, since it uses as much as digits as its factorization.

221430672125423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 967680, while the sum is 44.

The spelling of 221430672125423 in words is "two hundred twenty-one trillion, four hundred thirty billion, six hundred seventy-two million, one hundred twenty-five thousand, four hundred twenty-three".