1212533284840 has 64 divisors (see below), whose sum is σ = 2742781971600. Its totient is φ = 482421768192.

The previous prime is 1212533284811. The next prime is 1212533284873. The reversal of 1212533284840 is 484823352121.

It can be written as a sum of positive squares in 8 ways, for example, as 274955507044 + 937577777796 = 524362^2 + 968286^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79299916 + ... + 79315204.

Almost surely, 2^{1212533284840} is an apocalyptic number.

1212533284840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212533284840 is an abundant number, since it is smaller than the sum of its proper divisors (1530248686760).

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

1212533284840 is a wasteful number, since it uses less digits than its factorization.

1212533284840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25766 (or 25762 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 43.

The spelling of 1212533284840 in words is "one trillion, two hundred twelve billion, five hundred thirty-three million, two hundred eighty-four thousand, eight hundred forty".