1150154221100 has 72 divisors (see below), whose sum is σ = 2509721398800. Its totient is φ = 457504203520.

The previous prime is 1150154221087. The next prime is 1150154221109. The reversal of 1150154221100 is 11224510511.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1150154221109) by changing a digit.

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, 44055851 + ... + 44081949.

It is an arithmetic number, because the mean of its divisors is an integer number (34857241650).

Almost surely, 2^{1150154221100} is an apocalyptic number.

1150154221100 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 1150154221100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1254860699400).

1150154221100 is an abundant number, since it is smaller than the sum of its proper divisors (1359567177700).

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

1150154221100 is a wasteful number, since it uses less digits than its factorization.

1150154221100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28547 (or 28540 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 23.

Adding to 1150154221100 its reverse (11224510511), we get a palindrome (1161378731611).

The spelling of 1150154221100 in words is "one trillion, one hundred fifty billion, one hundred fifty-four million, two hundred twenty-one thousand, one hundred".