221534456107307 has 4 divisors (see below), whose sum is σ = 253182235551216. Its totient is φ = 189886676663400.

The previous prime is 221534456107247. The next prime is 221534456107309. The reversal of 221534456107307 is 703701654435122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221534456107307 - 2¹⁴ = 221534456090923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221534456107309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15823889721944 + ... + 15823889721957.

It is an arithmetic number, because the mean of its divisors is an integer number (63295558887804).

Almost surely, 2^{221534456107307} is an apocalyptic number.

221534456107307 is a deficient number, since it is larger than the sum of its proper divisors (31647779443909).

221534456107307 is an equidigital number, since it uses as much as digits as its factorization.

221534456107307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31647779443908.

The product of its (nonzero) digits is 4233600, while the sum is 50.

The spelling of 221534456107307 in words is "two hundred twenty-one trillion, five hundred thirty-four billion, four hundred fifty-six million, one hundred seven thousand, three hundred seven".