1172221416912 has 480 divisors, whose sum is σ = 4017109555200. Its totient is φ = 286037111808.

The previous prime is 1172221416907. The next prime is 1172221416923. The reversal of 1172221416912 is 2196141222711.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 153448389 + ... + 153456027.

It is an arithmetic number, because the mean of its divisors is an integer number (8368978240).

Almost surely, 2^{1172221416912} is an apocalyptic number.

1172221416912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1172221416912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2008554777600).

1172221416912 is an abundant number, since it is smaller than the sum of its proper divisors (2844888138288).

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

1172221416912 is a wasteful number, since it uses less digits than its factorization.

1172221416912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7775 (or 7726 counting only the distinct ones).

The product of its digits is 24192, while the sum is 39.

The spelling of 1172221416912 in words is "one trillion, one hundred seventy-two billion, two hundred twenty-one million, four hundred sixteen thousand, nine hundred twelve".