1155221174600 has 96 divisors (see below), whose sum is σ = 2721883824000. Its totient is φ = 455931383040.

The previous prime is 1155221174579. The next prime is 1155221174693. The reversal of 1155221174600 is 64711225511.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5099339 + ... + 5321061.

It is an arithmetic number, because the mean of its divisors is an integer number (28352956500).

Almost surely, 2^{1155221174600} is an apocalyptic number.

1155221174600 is a gapful number since it is divisible by the number (10) 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 1155221174600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1360941912000).

1155221174600 is an abundant number, since it is smaller than the sum of its proper divisors (1566662649400).

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

1155221174600 is a wasteful number, since it uses less digits than its factorization.

1155221174600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222087 (or 222078 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 35.

The spelling of 1155221174600 in words is "one trillion, one hundred fifty-five billion, two hundred twenty-one million, one hundred seventy-four thousand, six hundred".