221580133 has 4 divisors (see below), whose sum is σ = 221770528. Its totient is φ = 221389740.

The previous prime is 221580119. The next prime is 221580143. The reversal of 221580133 is 331085122.

221580133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 221580133 - 2¹³ = 221571941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221580098 and 221580107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221580103) 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, 93441 + ... + 95782.

It is an arithmetic number, because the mean of its divisors is an integer number (55442632).

Almost surely, 2^221580133 is an apocalyptic number.

It is an amenable number.

221580133 is a deficient number, since it is larger than the sum of its proper divisors (190395).

221580133 is a wasteful number, since it uses less digits than its factorization.

221580133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190394.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 221580133 is about 14885.5679434814. The cubic root of 221580133 is about 605.1229247297.

The spelling of 221580133 in words is "two hundred twenty-one million, five hundred eighty thousand, one hundred thirty-three".