221056233 has 4 divisors (see below), whose sum is σ = 294741648. Its totient is φ = 147370820.

The previous prime is 221056207. The next prime is 221056259. The reversal of 221056233 is 332650122.

221056233 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 an interprime number because it is at equal distance from previous prime (221056207) and next prime (221056259).

It is a cyclic number.

It is not a de Polignac number, because 221056233 - 2⁶ = 221056169 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (221054233) 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, 36842703 + ... + 36842708.

It is an arithmetic number, because the mean of its divisors is an integer number (73685412).

Almost surely, 2^221056233 is an apocalyptic number.

It is an amenable number.

221056233 is a deficient number, since it is larger than the sum of its proper divisors (73685415).

221056233 is an equidigital number, since it uses as much as digits as its factorization.

221056233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73685414.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 221056233 is about 14867.9599474844. The cubic root of 221056233 is about 604.6456345205.

The spelling of 221056233 in words is "two hundred twenty-one million, fifty-six thousand, two hundred thirty-three".