216630022 has 16 divisors (see below), whose sum is σ = 371681280. Its totient is φ = 92762568.

The previous prime is 216629999. The next prime is 216630023. The reversal of 216630022 is 220036612.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 216629975 and 216630002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216630023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12379 + ... + 24217.

It is an arithmetic number, because the mean of its divisors is an integer number (23230080).

Almost surely, 2^216630022 is an apocalyptic number.

216630022 is a deficient number, since it is larger than the sum of its proper divisors (155051258).

216630022 is a wasteful number, since it uses less digits than its factorization.

216630022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13155.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 216630022 is about 14718.3566338094. The cubic root of 216630022 is about 600.5827874517.

Adding to 216630022 its reverse (220036612), we get a palindrome (436666634).

The spelling of 216630022 in words is "two hundred sixteen million, six hundred thirty thousand, twenty-two".