221301133 has 4 divisors (see below), whose sum is σ = 221371360. Its totient is φ = 221230908.

The previous prime is 221301131. The next prime is 221301137. The reversal of 221301133 is 331103122.

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 221301133 - 2¹ = 221301131 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221301131) 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 3 ways as a sum of consecutive naturals, for example, 30153 + ... + 36766.

It is an arithmetic number, because the mean of its divisors is an integer number (55342840).

Almost surely, 2^221301133 is an apocalyptic number.

It is an amenable number.

221301133 is a deficient number, since it is larger than the sum of its proper divisors (70227).

221301133 is an equidigital number, since it uses as much as digits as its factorization.

221301133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70226.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 221301133 is about 14876.1934983382. The cubic root of 221301133 is about 604.8688402696.

Adding to 221301133 its reverse (331103122), we get a palindrome (552404255).

The spelling of 221301133 in words is "two hundred twenty-one million, three hundred one thousand, one hundred thirty-three".