12040400210320 has 40 divisors (see below), whose sum is σ = 28036800335736. Its totient is φ = 4808784626688.

The previous prime is 12040400210299. The next prime is 12040400210369. The reversal of 12040400210320 is 2301200404021.

It can be written as a sum of positive squares in 4 ways, for example, as 274622113936 + 11765778096384 = 524044^2 + 3430128^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 115188957 + ... + 115293436.

Almost surely, 2^{12040400210320} is an apocalyptic number.

12040400210320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12040400210320 is an abundant number, since it is smaller than the sum of its proper divisors (15996400125416).

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

12040400210320 is a wasteful number, since it uses less digits than its factorization.

12040400210320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230483059 (or 230483053 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 12040400210320 its reverse (2301200404021), we get a palindrome (14341600614341).

The spelling of 12040400210320 in words is "twelve trillion, forty billion, four hundred million, two hundred ten thousand, three hundred twenty".