221422047004187 has 2 divisors, whose sum is σ = 221422047004188. Its totient is φ = 221422047004186.

The previous prime is 221422047004177. The next prime is 221422047004201. The reversal of 221422047004187 is 781400740224122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221422047004187 - 2³² = 221417752036891 is a prime.

It is not a weakly prime, because it can be changed into another prime (221422047004177) 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 as a sum of consecutive naturals, namely, 110711023502093 + 110711023502094.

It is an arithmetic number, because the mean of its divisors is an integer number (110711023502094).

Almost surely, 2^{221422047004187} is an apocalyptic number.

221422047004187 is a deficient number, since it is larger than the sum of its proper divisors (1).

221422047004187 is an equidigital number, since it uses as much as digits as its factorization.

221422047004187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 401408, while the sum is 44.

The spelling of 221422047004187 in words is "two hundred twenty-one trillion, four hundred twenty-two billion, forty-seven million, four thousand, one hundred eighty-seven".