212133302220 has 96 divisors (see below), whose sum is σ = 685824910848. Its totient is φ = 47987730432.

The previous prime is 212133302191. The next prime is 212133302237. The reversal of 212133302220 is 22203331212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

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 31 ways as a sum of consecutive naturals, for example, 2562762 + ... + 2644241.

It is an arithmetic number, because the mean of its divisors is an integer number (7144009488).

Almost surely, 2^212133302220 is an apocalyptic number.

212133302220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212133302220 is an abundant number, since it is smaller than the sum of its proper divisors (473691608628).

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

212133302220 is a wasteful number, since it uses less digits than its factorization.

212133302220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5207119 (or 5207117 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 212133302220 its reverse (22203331212), we get a palindrome (234336633432).

The spelling of 212133302220 in words is "two hundred twelve billion, one hundred thirty-three million, three hundred two thousand, two hundred twenty".