221527427507167 has 4 divisors (see below), whose sum is σ = 224647532120016. Its totient is φ = 218407322894320.

The previous prime is 221527427507147. The next prime is 221527427507227. The reversal of 221527427507167 is 761705724725122.

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 221527427507167 - 2⁷ = 221527427507039 is a prime.

It is a super-2 number, since 2×221527427507167² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221527427507147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1560052306318 + ... + 1560052306459.

It is an arithmetic number, because the mean of its divisors is an integer number (56161883030004).

Almost surely, 2^{221527427507167} is an apocalyptic number.

221527427507167 is a deficient number, since it is larger than the sum of its proper divisors (3120104612849).

221527427507167 is an equidigital number, since it uses as much as digits as its factorization.

221527427507167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3120104612848.

The product of its (nonzero) digits is 23049600, while the sum is 58.

The spelling of 221527427507167 in words is "two hundred twenty-one trillion, five hundred twenty-seven billion, four hundred twenty-seven million, five hundred seven thousand, one hundred sixty-seven".