216613122 has 32 divisors (see below), whose sum is σ = 488911680. Its totient is φ = 63376320.

The previous prime is 216613121. The next prime is 216613139. The reversal of 216613122 is 221316612.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 216613092 and 216613101.

It is not an unprimeable number, because it can be changed into a prime (216613121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54673 + ... + 58500.

It is an arithmetic number, because the mean of its divisors is an integer number (15278490).

Almost surely, 2^216613122 is an apocalyptic number.

216613122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

216613122 is an abundant number, since it is smaller than the sum of its proper divisors (272298558).

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

216613122 is a wasteful number, since it uses less digits than its factorization.

216613122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113218.

The product of its digits is 864, while the sum is 24.

The square root of 216613122 is about 14717.7825096038. The cubic root of 216613122 is about 600.5671692517.

Adding to 216613122 its reverse (221316612), we get a palindrome (437929734).

The spelling of 216613122 in words is "two hundred sixteen million, six hundred thirteen thousand, one hundred twenty-two".