210212210220 has 48 divisors (see below), whose sum is σ = 589281140448. Its totient is φ = 55991165440.

The previous prime is 210212210101. The next prime is 210212210237. The reversal of 210212210220 is 22012212012.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 210212210220.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1992651 + ... + 2095490.

It is an arithmetic number, because the mean of its divisors is an integer number (12276690426).

Almost surely, 2^210212210220 is an apocalyptic number.

210212210220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210212210220 is an abundant number, since it is smaller than the sum of its proper divisors (379068930228).

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

210212210220 is a wasteful number, since it uses less digits than its factorization.

210212210220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4089010 (or 4089008 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 210212210220 its reverse (22012212012), we get a palindrome (232224422232).

The spelling of 210212210220 in words is "two hundred ten billion, two hundred twelve million, two hundred ten thousand, two hundred twenty".