1205352521212 has 12 divisors (see below), whose sum is σ = 2410705042480. Its totient is φ = 516579651936.

The previous prime is 1205352521207. The next prime is 1205352521237. The reversal of 1205352521212 is 2121252535021.

1205352521212 is an admirable number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 21524152137 + ... + 21524152192.

Almost surely, 2^{1205352521212} is an apocalyptic number.

It is an amenable number.

1205352521212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1205352521212 is a wasteful number, since it uses less digits than its factorization.

1205352521212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43048304340 (or 43048304338 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

The spelling of 1205352521212 in words is "one trillion, two hundred five billion, three hundred fifty-two million, five hundred twenty-one thousand, two hundred twelve".