1212352540544 has 32 divisors (see below), whose sum is σ = 2415292692240. Its totient is φ = 606161433600.

The previous prime is 1212352540541. The next prime is 1212352540571. The reversal of 1212352540544 is 4450452532121.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 1212352540498 and 1212352540507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212352540541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6688292 + ... + 6867164.

Almost surely, 2^{1212352540544} is an apocalyptic number.

It is an amenable number.

1212352540544 is a deficient number, since it is larger than the sum of its proper divisors (1202940151696).

1212352540544 is an equidigital number, since it uses as much as digits as its factorization.

1212352540544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231838 (or 231826 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 38.

The spelling of 1212352540544 in words is "one trillion, two hundred twelve billion, three hundred fifty-two million, five hundred forty thousand, five hundred forty-four".