221429482635679 has 2 divisors, whose sum is σ = 221429482635680. Its totient is φ = 221429482635678.

The previous prime is 221429482635677. The next prime is 221429482635709. The reversal of 221429482635679 is 976536284924122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221429482635679 - 2¹ = 221429482635677 is a prime.

Together with 221429482635677, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221429482635677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110714741317839 + 110714741317840.

It is an arithmetic number, because the mean of its divisors is an integer number (110714741317840).

Almost surely, 2^{221429482635679} is an apocalyptic number.

221429482635679 is a deficient number, since it is larger than the sum of its proper divisors (1).

221429482635679 is an equidigital number, since it uses as much as digits as its factorization.

221429482635679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 627056640, while the sum is 70.

The spelling of 221429482635679 in words is "two hundred twenty-one trillion, four hundred twenty-nine billion, four hundred eighty-two million, six hundred thirty-five thousand, six hundred seventy-nine".