216022156 has 12 divisors (see below), whose sum is σ = 432044368. Its totient is φ = 92580912.

The previous prime is 216022129. The next prime is 216022171. The reversal of 216022156 is 651220612.

216022156 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 216022156.

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, 3857511 + ... + 3857566.

Almost surely, 2^216022156 is an apocalyptic number.

It is an amenable number.

216022156 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216022156 is a wasteful number, since it uses less digits than its factorization.

216022156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7715088 (or 7715086 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 216022156 is about 14697.6921997979. The cubic root of 216022156 is about 600.0205141134.

Adding to 216022156 its reverse (651220612), we get a palindrome (867242768).

The spelling of 216022156 in words is "two hundred sixteen million, twenty-two thousand, one hundred fifty-six".