21202112006 has 8 divisors (see below), whose sum is σ = 31805281584. Its totient is φ = 10600351480.

The previous prime is 21202111999. The next prime is 21202112051. The reversal of 21202112006 is 60021120212.

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, 313805 + ... + 375336.

It is an arithmetic number, because the mean of its divisors is an integer number (3975660198).

Almost surely, 2^21202112006 is an apocalyptic number.

21202112006 is a deficient number, since it is larger than the sum of its proper divisors (10603169578).

21202112006 is a wasteful number, since it uses less digits than its factorization.

21202112006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704526.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21202112006 its reverse (60021120212), we get a palindrome (81223232218).

The spelling of 21202112006 in words is "twenty-one billion, two hundred two million, one hundred twelve thousand, six".