212212431200 has 288 divisors, whose sum is σ = 647553553920. Its totient is φ = 65974579200.

The previous prime is 212212431169. The next prime is 212212431209. The reversal of 212212431200 is 2134212212.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212212431209) 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 47 ways as a sum of consecutive naturals, for example, 25190189 + ... + 25198611.

It is an arithmetic number, because the mean of its divisors is an integer number (2248449840).

Almost surely, 2^212212431200 is an apocalyptic number.

212212431200 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 212212431200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (323776776960).

212212431200 is an abundant number, since it is smaller than the sum of its proper divisors (435341122720).

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

212212431200 is a wasteful number, since it uses less digits than its factorization.

212212431200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8870 (or 8857 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 212212431200 its reverse (2134212212), we get a palindrome (214346643412).

The spelling of 212212431200 in words is "two hundred twelve billion, two hundred twelve million, four hundred thirty-one thousand, two hundred".