216022006 has 4 divisors (see below), whose sum is σ = 324033012. Its totient is φ = 108011002.

The previous prime is 216021997. The next prime is 216022031. The reversal of 216022006 is 600220612.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54005500 + ... + 54005503.

It is an arithmetic number, because the mean of its divisors is an integer number (81008253).

Almost surely, 2^216022006 is an apocalyptic number.

216022006 is a deficient number, since it is larger than the sum of its proper divisors (108011006).

216022006 is a wasteful number, since it uses less digits than its factorization.

216022006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108011005.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 216022006 is about 14697.6870969551. The cubic root of 216022006 is about 600.0203752340.

Adding to 216022006 its reverse (600220612), we get a palindrome (816242618).

The spelling of 216022006 in words is "two hundred sixteen million, twenty-two thousand, six".