12240354512346 has 16 divisors (see below), whose sum is σ = 24485446982784. Its totient is φ = 4079328511104.

The previous prime is 12240354512341. The next prime is 12240354512383. The reversal of 12240354512346 is 64321545304221.

It is a junction number, because it is equal to n+sod(n) for n = 12240354512298 and 12240354512307.

It is not an unprimeable number, because it can be changed into a prime (12240354512341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197381335 + ... + 197443338.

It is an arithmetic number, because the mean of its divisors is an integer number (1530340436424).

Almost surely, 2^{12240354512346} is an apocalyptic number.

12240354512346 is an abundant number, since it is smaller than the sum of its proper divisors (12245092470438).

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

12240354512346 is a wasteful number, since it uses less digits than its factorization.

12240354512346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394829845.

The product of its (nonzero) digits is 691200, while the sum is 42.

Adding to 12240354512346 its reverse (64321545304221), we get a palindrome (76561899816567).

The spelling of 12240354512346 in words is "twelve trillion, two hundred forty billion, three hundred fifty-four million, five hundred twelve thousand, three hundred forty-six".