222774513102721 has 4 divisors (see below), whose sum is σ = 222776702828244. Its totient is φ = 222772323377200.

The previous prime is 222774513102709. The next prime is 222774513102731. The reversal of 222774513102721 is 127201315477222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41142423463696 + 181632089639025 = 6414236^2 + 13477095^2 .

It is a cyclic number.

It is not a de Polignac number, because 222774513102721 - 2⁵ = 222774513102689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222774513102731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1094710150 + ... + 1094913631.

It is an arithmetic number, because the mean of its divisors is an integer number (55694175707061).

Almost surely, 2^{222774513102721} is an apocalyptic number.

It is an amenable number.

222774513102721 is a deficient number, since it is larger than the sum of its proper divisors (2189725523).

222774513102721 is a wasteful number, since it uses less digits than its factorization.

222774513102721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2189725522.

The product of its (nonzero) digits is 658560, while the sum is 46.

Adding to 222774513102721 its reverse (127201315477222), we get a palindrome (349975828579943).

The spelling of 222774513102721 in words is "two hundred twenty-two trillion, seven hundred seventy-four billion, five hundred thirteen million, one hundred two thousand, seven hundred twenty-one".