221100106 has 8 divisors (see below), whose sum is σ = 336321504. Its totient is φ = 108992940.

The previous prime is 221100101. The next prime is 221100107. The reversal of 221100106 is 601001122.

221100106 is digitally balanced in base 2, 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 super-2 number, since 2×221100106² = 97770513746422472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221100101) 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, 778380 + ... + 778663.

It is an arithmetic number, because the mean of its divisors is an integer number (42040188).

Almost surely, 2^221100106 is an apocalyptic number.

221100106 is a deficient number, since it is larger than the sum of its proper divisors (115221398).

221100106 is a wasteful number, since it uses less digits than its factorization.

221100106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1557116.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 221100106 is about 14869.4352952626. The cubic root of 221100106 is about 604.6856331862.

Adding to 221100106 its reverse (601001122), we get a palindrome (822101228).

The spelling of 221100106 in words is "two hundred twenty-one million, one hundred thousand, one hundred six".