216502122 has 16 divisors (see below), whose sum is σ = 436978080. Its totient is φ = 71505072.

The previous prime is 216502103. The next prime is 216502141. The reversal of 216502122 is 221205612.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (216502103) and next prime (216502141).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164868 + ... + 166175.

It is an arithmetic number, because the mean of its divisors is an integer number (27311130).

Almost surely, 2^216502122 is an apocalyptic number.

216502122 is an abundant number, since it is smaller than the sum of its proper divisors (220475958).

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

216502122 is a wasteful number, since it uses less digits than its factorization.

216502122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331157.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 216502122 is about 14714.0110778808. The cubic root of 216502122 is about 600.4645679793.

Adding to 216502122 its reverse (221205612), we get a palindrome (437707734).

The spelling of 216502122 in words is "two hundred sixteen million, five hundred two thousand, one hundred twenty-two".