221354577268 has 24 divisors (see below), whose sum is σ = 422728881120. Its totient is φ = 100581700320.

The previous prime is 221354577263. The next prime is 221354577277. The reversal of 221354577268 is 862775453122.

221354577268 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221354577263) 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 7 ways as a sum of consecutive naturals, for example, 718563 + ... + 979306.

It is an arithmetic number, because the mean of its divisors is an integer number (17613703380).

Almost surely, 2^221354577268 is an apocalyptic number.

It is an amenable number.

221354577268 is a deficient number, since it is larger than the sum of its proper divisors (201374303852).

221354577268 is a wasteful number, since it uses less digits than its factorization.

221354577268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1700847 (or 1700845 counting only the distinct ones).

The product of its digits is 5644800, while the sum is 52.

The spelling of 221354577268 in words is "two hundred twenty-one billion, three hundred fifty-four million, five hundred seventy-seven thousand, two hundred sixty-eight".