11978932212 has 240 divisors, whose sum is σ = 35111538000. Its totient is φ = 3535902720.

The previous prime is 11978932193. The next prime is 11978932213. The reversal of 11978932212 is 21223987911.

It can be written as a sum of positive squares in 8 ways, for example, as 9696996 + 11969235216 = 3114^2 + 109404^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11978932213) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 34323414 + ... + 34323762.

It is an arithmetic number, because the mean of its divisors is an integer number (146298075).

Almost surely, 2^11978932212 is an apocalyptic number.

11978932212 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 11978932212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17555769000).

11978932212 is an abundant number, since it is smaller than the sum of its proper divisors (23132605788).

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

11978932212 is a wasteful number, since it uses less digits than its factorization.

11978932212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688 (or 677 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The spelling of 11978932212 in words is "eleven billion, nine hundred seventy-eight million, nine hundred thirty-two thousand, two hundred twelve".