221065753 has 8 divisors (see below), whose sum is σ = 229322880. Its totient is φ = 212850960.

The previous prime is 221065751. The next prime is 221065771. The reversal of 221065753 is 357560122.

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 221065753 - 2¹ = 221065751 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221065751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258 + ... + 21028.

It is an arithmetic number, because the mean of its divisors is an integer number (28665360).

Almost surely, 2^221065753 is an apocalyptic number.

It is an amenable number.

221065753 is a deficient number, since it is larger than the sum of its proper divisors (8257127).

221065753 is a wasteful number, since it uses less digits than its factorization.

221065753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21167.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 221065753 is about 14868.2800955591. The cubic root of 221065753 is about 604.6543142785.

The spelling of 221065753 in words is "two hundred twenty-one million, sixty-five thousand, seven hundred fifty-three".