1212326568432 has 180 divisors, whose sum is σ = 4026453967536. Its totient is φ = 346378809600.

The previous prime is 1212326568419. The next prime is 1212326568433. The reversal of 1212326568432 is 2348656232121.

1212326568432 is a `hidden beast` number, since 1 + 2 + 1 + 23 + 26 + 568 + 43 + 2 = 666.

It is a super-2 number, since 2×1212326568432² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212326568433) 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 35 ways as a sum of consecutive naturals, for example, 90069 + ... + 1559732.

Almost surely, 2^{1212326568432} is an apocalyptic number.

1212326568432 is a gapful number since it is divisible by the number (12) 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 1212326568432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2013226983768).

1212326568432 is an abundant number, since it is smaller than the sum of its proper divisors (2814127399104).

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

1212326568432 is an frugal number, since it uses more digits than its factorization.

1212326568432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1649840 (or 1649813 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The spelling of 1212326568432 in words is "one trillion, two hundred twelve billion, three hundred twenty-six million, five hundred sixty-eight thousand, four hundred thirty-two".