221050135 has 4 divisors (see below), whose sum is σ = 265260168. Its totient is φ = 176840104.

The previous prime is 221050111. The next prime is 221050169. The reversal of 221050135 is 531050122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221050135 - 2¹³ = 221041943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22105009 + ... + 22105018.

It is an arithmetic number, because the mean of its divisors is an integer number (66315042).

Almost surely, 2^221050135 is an apocalyptic number.

221050135 is a deficient number, since it is larger than the sum of its proper divisors (44210033).

221050135 is an equidigital number, since it uses as much as digits as its factorization.

221050135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44210032.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 221050135 is about 14867.7548742236. The cubic root of 221050135 is about 604.6400746034.

The spelling of 221050135 in words is "two hundred twenty-one million, fifty thousand, one hundred thirty-five".