221442316124777 has 8 divisors (see below), whose sum is σ = 241573755761760. Its totient is φ = 201310929819360.

The previous prime is 221442316124717. The next prime is 221442316124803. The reversal of 221442316124777 is 777421613244122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221442316124777 - 2²⁶ = 221442249015913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221442316124717) 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 7 ways as a sum of consecutive naturals, for example, 4390268 + ... + 21497885.

It is an arithmetic number, because the mean of its divisors is an integer number (30196719470220).

Almost surely, 2^{221442316124777} is an apocalyptic number.

It is an amenable number.

221442316124777 is a deficient number, since it is larger than the sum of its proper divisors (20131439636983).

221442316124777 is a wasteful number, since it uses less digits than its factorization.

221442316124777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26665783.

The product of its digits is 6322176, while the sum is 53.

Adding to 221442316124777 its reverse (777421613244122), we get a palindrome (998863929368899).

The spelling of 221442316124777 in words is "two hundred twenty-one trillion, four hundred forty-two billion, three hundred sixteen million, one hundred twenty-four thousand, seven hundred seventy-seven".