221040567 has 24 divisors (see below), whose sum is σ = 348965760. Its totient is φ = 133710480.

The previous prime is 221040563. The next prime is 221040587. The reversal of 221040567 is 765040122.

It is not a de Polignac number, because 221040567 - 2² = 221040563 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221040567.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221040563) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59478 + ... + 63084.

It is an arithmetic number, because the mean of its divisors is an integer number (14540240).

Almost surely, 2^221040567 is an apocalyptic number.

221040567 is a deficient number, since it is larger than the sum of its proper divisors (127925193).

221040567 is a wasteful number, since it uses less digits than its factorization.

221040567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4243 (or 4240 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 221040567 is about 14867.4331005725. The cubic root of 221040567 is about 604.6313506704.

Adding to 221040567 its reverse (765040122), we get a palindrome (986080689).

It can be divided in two parts, 2 and 21040567, that added together give a square (21040569 = 4587²).

The spelling of 221040567 in words is "two hundred twenty-one million, forty thousand, five hundred sixty-seven".