212193786913812 has 240 divisors, whose sum is σ = 613556245919232. Its totient is φ = 63410250496320.

The previous prime is 212193786913807. The next prime is 212193786913817. The reversal of 212193786913812 is 218319687391212.

It is a happy number.

212193786913812 is a `hidden beast` number, since 2 + 1 + 2 + 1 + 93 + 7 + 86 + 91 + 381 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (212193786913807) and next prime (212193786913817).

It is a self number, because there is not a number n which added to its sum of digits gives 212193786913812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212193786913817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 161153473 + ... + 162464855.

Almost surely, 2^{212193786913812} is an apocalyptic number.

212193786913812 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 212193786913812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (306778122959616).

212193786913812 is an abundant number, since it is smaller than the sum of its proper divisors (401362459005420).

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

212193786913812 is a wasteful number, since it uses less digits than its factorization.

212193786913812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312040 (or 1312029 counting only the distinct ones).

The product of its digits is 15676416, while the sum is 63.

The spelling of 212193786913812 in words is "two hundred twelve trillion, one hundred ninety-three billion, seven hundred eighty-six million, nine hundred thirteen thousand, eight hundred twelve".