2221855187167 has 32 divisors (see below), whose sum is σ = 3087423751680. Its totient is φ = 1543711841280.

The previous prime is 2221855187159. The next prime is 2221855187177. The reversal of 2221855187167 is 7617815581222.

It is not a de Polignac number, because 2221855187167 - 2³ = 2221855187159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221855187177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44642718 + ... + 44692459.

It is an arithmetic number, because the mean of its divisors is an integer number (96481992240).

Almost surely, 2^{2221855187167} is an apocalyptic number.

2221855187167 is a deficient number, since it is larger than the sum of its proper divisors (865568564513).

2221855187167 is a wasteful number, since it uses less digits than its factorization.

2221855187167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89335231.

The product of its digits is 3763200, while the sum is 55.

The spelling of 2221855187167 in words is "two trillion, two hundred twenty-one billion, eight hundred fifty-five million, one hundred eighty-seven thousand, one hundred sixty-seven".