210102220 has 48 divisors (see below), whose sum is σ = 455269248. Its totient is φ = 81401600.

The previous prime is 210102203. The next prime is 210102223. The reversal of 210102220 is 22201012.

210102220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 210102197 and 210102206.

It is not an unprimeable number, because it can be changed into a prime (210102223) 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, 93834 + ... + 96046.

It is an arithmetic number, because the mean of its divisors is an integer number (9484776).

Almost surely, 2^210102220 is an apocalyptic number.

210102220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210102220 is an abundant number, since it is smaller than the sum of its proper divisors (245167028).

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

210102220 is a wasteful number, since it uses less digits than its factorization.

210102220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2370 (or 2368 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 210102220 is about 14494.9032421745. The cubic root of 210102220 is about 594.4886221247.

Adding to 210102220 its reverse (22201012), we get a palindrome (232303232).

The spelling of 210102220 in words is "two hundred ten million, one hundred two thousand, two hundred twenty".