1221105235332 has 24 divisors (see below), whose sum is σ = 2895954494272. Its totient is φ = 400362372000.

The previous prime is 1221105235297. The next prime is 1221105235369. The reversal of 1221105235332 is 2335325011221.

It is a self number, because there is not a number n which added to its sum of digits gives 1221105235332.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 834087544 + ... + 834089007.

Almost surely, 2^{1221105235332} is an apocalyptic number.

1221105235332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1221105235332 is an abundant number, since it is smaller than the sum of its proper divisors (1674849258940).

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

1221105235332 is a wasteful number, since it uses less digits than its factorization.

1221105235332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668176619 (or 1668176617 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The spelling of 1221105235332 in words is "one trillion, two hundred twenty-one billion, one hundred five million, two hundred thirty-five thousand, three hundred thirty-two".