213103320012 has 96 divisors (see below), whose sum is σ = 602946489600. Its totient is φ = 64552118400.

The previous prime is 213103320011. The next prime is 213103320041. The reversal of 213103320012 is 210023301312.

213103320012 is a `hidden beast` number, since 21 + 310 + 3 + 320 + 0 + 12 = 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 (213103320011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3209187 + ... + 3274917.

It is an arithmetic number, because the mean of its divisors is an integer number (6280692600).

Almost surely, 2^213103320012 is an apocalyptic number.

213103320012 is a gapful number since it is divisible by the number (22) 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 213103320012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (301473244800).

213103320012 is an abundant number, since it is smaller than the sum of its proper divisors (389843169588).

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

213103320012 is a wasteful number, since it uses less digits than its factorization.

213103320012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68484 (or 68476 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 213103320012 its reverse (210023301312), we get a palindrome (423126621324).

The spelling of 213103320012 in words is "two hundred thirteen billion, one hundred three million, three hundred twenty thousand, twelve".