212320320021200 has 60 divisors (see below), whose sum is σ = 523886043721260. Its totient is φ = 82632773191680.

The previous prime is 212320320021197. The next prime is 212320320021217. The reversal of 212320320021200 is 2120023023212.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 2707025252416 + 209613294768784 = 1645304^2 + 14478028^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7172968985 + ... + 7172998584.

It is an arithmetic number, because the mean of its divisors is an integer number (8731434062021).

Almost surely, 2^{212320320021200} is an apocalyptic number.

212320320021200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212320320021200 is an abundant number, since it is smaller than the sum of its proper divisors (311565723700060).

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

212320320021200 is a wasteful number, since it uses less digits than its factorization.

212320320021200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14345967624 (or 14345967613 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 212320320021200 its reverse (2120023023212), we get a palindrome (214440343044412).

The spelling of 212320320021200 in words is "two hundred twelve trillion, three hundred twenty billion, three hundred twenty million, twenty-one thousand, two hundred".