21100222006 has 8 divisors (see below), whose sum is σ = 31650960744. Its totient is φ = 10549901760.

The previous prime is 21100221997. The next prime is 21100222043. The reversal of 21100222006 is 60022200112.

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

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, 107206 + ... + 231718.

It is an arithmetic number, because the mean of its divisors is an integer number (3956370093).

Almost surely, 2^21100222006 is an apocalyptic number.

21100222006 is a deficient number, since it is larger than the sum of its proper divisors (10550738738).

21100222006 is a wasteful number, since it uses less digits than its factorization.

21100222006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209246.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 21100222006 its reverse (60022200112), we get a palindrome (81122422118).

The spelling of 21100222006 in words is "twenty-one billion, one hundred million, two hundred twenty-two thousand, six".