221436275187115 has 16 divisors (see below), whose sum is σ = 274444298143488. Its totient is φ = 171412179444576.

The previous prime is 221436275187103. The next prime is 221436275187119. The reversal of 221436275187115 is 511781572634122.

It is a cyclic number.

It is not a de Polignac number, because 221436275187115 - 2²⁷ = 221436140969387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221436275187119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4812762807 + ... + 4812808816.

It is an arithmetic number, because the mean of its divisors is an integer number (17152768633968).

Almost surely, 2^{221436275187115} is an apocalyptic number.

221436275187115 is a deficient number, since it is larger than the sum of its proper divisors (53008022956373).

221436275187115 is a wasteful number, since it uses less digits than its factorization.

221436275187115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9625571778.

The product of its digits is 5644800, while the sum is 55.

The spelling of 221436275187115 in words is "two hundred twenty-one trillion, four hundred thirty-six billion, two hundred seventy-five million, one hundred eighty-seven thousand, one hundred fifteen".