213323124420 has 288 divisors, whose sum is σ = 774090390528. Its totient is φ = 48303050112.

The previous prime is 213323124401. The next prime is 213323124451. The reversal of 213323124420 is 24421323312.

213323124420 is a `hidden beast` number, since 2 + 1 + 3 + 3 + 231 + 2 + 4 + 420 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 95 ways as a sum of consecutive naturals, for example, 3610839 + ... + 3669441.

It is an arithmetic number, because the mean of its divisors is an integer number (2687813856).

Almost surely, 2^213323124420 is an apocalyptic number.

213323124420 is a gapful number since it is divisible by the number (20) 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 213323124420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (387045195264).

213323124420 is an abundant number, since it is smaller than the sum of its proper divisors (560767266108).

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

213323124420 is a wasteful number, since it uses less digits than its factorization.

213323124420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58741 (or 58727 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 213323124420 its reverse (24421323312), we get a palindrome (237744447732).

The spelling of 213323124420 in words is "two hundred thirteen billion, three hundred twenty-three million, one hundred twenty-four thousand, four hundred twenty".