221106662 has 8 divisors (see below), whose sum is σ = 379040016. Its totient is φ = 94759992.

The previous prime is 221106661. The next prime is 221106671. The reversal of 221106662 is 266601122.

221106662 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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (221106661) 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, 7896653 + ... + 7896680.

It is an arithmetic number, because the mean of its divisors is an integer number (47380002).

Almost surely, 2^221106662 is an apocalyptic number.

221106662 is a deficient number, since it is larger than the sum of its proper divisors (157933354).

221106662 is a wasteful number, since it uses less digits than its factorization.

221106662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15793342.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 221106662 is about 14869.6557458470. The cubic root of 221106662 is about 604.6916097850.

Adding to 221106662 its reverse (266601122), we get a palindrome (487707784).

The spelling of 221106662 in words is "two hundred twenty-one million, one hundred six thousand, six hundred sixty-two".