221567041 has 4 divisors (see below), whose sum is σ = 222926512. Its totient is φ = 220207572.

The previous prime is 221566979. The next prime is 221567051. The reversal of 221567041 is 140765122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 221567041 - 2¹⁵ = 221534273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221567051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 679491 + ... + 679816.

It is an arithmetic number, because the mean of its divisors is an integer number (55731628).

Almost surely, 2^221567041 is an apocalyptic number.

It is an amenable number.

221567041 is a deficient number, since it is larger than the sum of its proper divisors (1359471).

221567041 is a wasteful number, since it uses less digits than its factorization.

221567041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1359470.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 221567041 is about 14885.1281821824. The cubic root of 221567041 is about 605.1110066556. Note that the first 3 decimals are identical.

The spelling of 221567041 in words is "two hundred twenty-one million, five hundred sixty-seven thousand, forty-one".