21113120006 has 32 divisors (see below), whose sum is σ = 35200316448. Its totient is φ = 9417219840.

The previous prime is 21113119939. The next prime is 21113120057. The reversal of 21113120006 is 60002131112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 283016 + ... + 349748.

It is an arithmetic number, because the mean of its divisors is an integer number (1100009889).

Almost surely, 2^21113120006 is an apocalyptic number.

21113120006 is a deficient number, since it is larger than the sum of its proper divisors (14087196442).

21113120006 is a wasteful number, since it uses less digits than its factorization.

21113120006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67016.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 21113120006 its reverse (60002131112), we get a palindrome (81115251118).

The spelling of 21113120006 in words is "twenty-one billion, one hundred thirteen million, one hundred twenty thousand, six".