221054006 has 8 divisors (see below), whose sum is σ = 332247000. Its totient is φ = 110305008.

The previous prime is 221054003. The next prime is 221054011. The reversal of 221054006 is 600450122.

It is a happy number.

221054006 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221054003) 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, 109751 + ... + 111746.

It is an arithmetic number, because the mean of its divisors is an integer number (41530875).

Almost surely, 2^221054006 is an apocalyptic number.

221054006 is a deficient number, since it is larger than the sum of its proper divisors (111192994).

221054006 is a wasteful number, since it uses less digits than its factorization.

221054006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221998.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 221054006 is about 14867.8850547077. The cubic root of 221054006 is about 604.6436040411.

It can be divided in two parts, 22 and 1054006, that multiplied together give a palindrome (23188132).

The spelling of 221054006 in words is "two hundred twenty-one million, fifty-four thousand, six".