221104867 has 2 divisors, whose sum is σ = 221104868. Its totient is φ = 221104866.

The previous prime is 221104861. The next prime is 221104901. The reversal of 221104867 is 768401122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221104867 - 2⁷ = 221104739 is a prime.

It is a super-2 number, since 2×221104867² = 97774724422175378, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (221104861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110552433 + 110552434.

It is an arithmetic number, because the mean of its divisors is an integer number (110552434).

Almost surely, 2^221104867 is an apocalyptic number.

221104867 is a deficient number, since it is larger than the sum of its proper divisors (1).

221104867 is an equidigital number, since it uses as much as digits as its factorization.

221104867 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 221104867 is about 14869.5953879048. The cubic root of 221104867 is about 604.6899734339.

Adding to 221104867 its reverse (768401122), we get a palindrome (989505989).

The spelling of 221104867 in words is "two hundred twenty-one million, one hundred four thousand, eight hundred sixty-seven".