1245320143212 has 96 divisors (see below), whose sum is σ = 2962830707200. Its totient is φ = 407024082432.

The previous prime is 1245320143211. The next prime is 1245320143229. The reversal of 1245320143212 is 2123410235421.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1245320143212.

It is not an unprimeable number, because it can be changed into a prime (1245320143211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 145834839 + ... + 145843377.

Almost surely, 2^{1245320143212} is an apocalyptic number.

1245320143212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1245320143212 is an abundant number, since it is smaller than the sum of its proper divisors (1717510563988).

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

1245320143212 is a wasteful number, since it uses less digits than its factorization.

1245320143212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9575 (or 9573 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 1245320143212 its reverse (2123410235421), we get a palindrome (3368730378633).

The spelling of 1245320143212 in words is "one trillion, two hundred forty-five billion, three hundred twenty million, one hundred forty-three thousand, two hundred twelve".