216022120 has 16 divisors (see below), whose sum is σ = 486049860. Its totient is φ = 86408832.

The previous prime is 216022091. The next prime is 216022127. The reversal of 216022120 is 21220612.

It can be written as a sum of positive squares in 2 ways, for example, as 197514916 + 18507204 = 14054^2 + 4302^2 .

It is a junction number, because it is equal to n+sod(n) for n = 216022094 and 216022103.

It is not an unprimeable number, because it can be changed into a prime (216022127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2700237 + ... + 2700316.

Almost surely, 2^216022120 is an apocalyptic number.

216022120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216022120 is an abundant number, since it is smaller than the sum of its proper divisors (270027740).

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

216022120 is a wasteful number, since it uses less digits than its factorization.

216022120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5400564 (or 5400560 counting only the distinct ones).

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

The square root of 216022120 is about 14697.6909751158. The cubic root of 216022120 is about 600.0204807824.

Adding to 216022120 its reverse (21220612), we get a palindrome (237242732).

The spelling of 216022120 in words is "two hundred sixteen million, twenty-two thousand, one hundred twenty".