12011212101320 has 32 divisors (see below), whose sum is σ = 27027046121400. Its totient is φ = 4804161481728.

The previous prime is 12011212101307. The next prime is 12011212101337. The reversal of 12011212101320 is 2310121211021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10421701366756 + 1589510734564 = 3228266^2 + 1260758^2 .

It is a super-2 number, since 2×12011212101320² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9502769 + ... + 10692288.

Almost surely, 2^{12011212101320} is an apocalyptic number.

12011212101320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12011212101320 is an abundant number, since it is smaller than the sum of its proper divisors (15015834020080).

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

12011212101320 is a wasteful number, since it uses less digits than its factorization.

12011212101320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20209937 (or 20209933 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 12011212101320 its reverse (2310121211021), we get a palindrome (14321333312341).

The spelling of 12011212101320 in words is "twelve trillion, eleven billion, two hundred twelve million, one hundred one thousand, three hundred twenty".