213220020312 has 96 divisors (see below), whose sum is σ = 658473641280. Its totient is φ = 61746969600.

The previous prime is 213220020311. The next prime is 213220020313. The reversal of 213220020312 is 213020022312.

213220020312 is a `hidden beast` number, since 2 + 132 + 200 + 20 + 312 = 666.

It is an interprime number because it is at equal distance from previous prime (213220020311) and next prime (213220020313).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213220020311) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 6684064 + ... + 6715887.

It is an arithmetic number, because the mean of its divisors is an integer number (6859100430).

Almost surely, 2^213220020312 is an apocalyptic number.

It is an amenable number.

213220020312 is an abundant number, since it is smaller than the sum of its proper divisors (445253620968).

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

213220020312 is a wasteful number, since it uses less digits than its factorization.

213220020312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13399993 (or 13399986 counting only the distinct ones).

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

Adding to 213220020312 its reverse (213020022312), we get a palindrome (426240042624).

It can be divided in two parts, 2132200 and 20312, that added together give a palindrome (2152512).

The spelling of 213220020312 in words is "two hundred thirteen billion, two hundred twenty million, twenty thousand, three hundred twelve".