212120300304 has 120 divisors (see below), whose sum is σ = 648426123072. Its totient is φ = 64197845760.

The previous prime is 212120300303. The next prime is 212120300311. The reversal of 212120300304 is 403003021212.

212120300304 is a `hidden beast` number, since 21 + 21 + 20 + 300 + 304 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (212120300303) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1178437 + ... + 1346459.

Almost surely, 2^212120300304 is an apocalyptic number.

212120300304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212120300304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (324213061536).

212120300304 is an abundant number, since it is smaller than the sum of its proper divisors (436305822768).

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

212120300304 is a wasteful number, since it uses less digits than its factorization.

212120300304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168845 (or 168836 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 212120300304 its reverse (403003021212), we get a palindrome (615123321516).

The spelling of 212120300304 in words is "two hundred twelve billion, one hundred twenty million, three hundred thousand, three hundred four".