11865307222120 has 128 divisors (see below), whose sum is σ = 30852589167360. Its totient is φ = 4058815221760.

The previous prime is 11865307222073. The next prime is 11865307222127. The reversal of 11865307222120 is 2122270356811.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (11865307222127) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 14540397 + ... + 15334723.

It is an arithmetic number, because the mean of its divisors is an integer number (241035852870).

Almost surely, 2^{11865307222120} is an apocalyptic number.

11865307222120 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 11865307222120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15426294583680).

11865307222120 is an abundant number, since it is smaller than the sum of its proper divisors (18987281945240).

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

11865307222120 is a wasteful number, since it uses less digits than its factorization.

11865307222120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796363 (or 796359 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

Adding to 11865307222120 its reverse (2122270356811), we get a palindrome (13987577578931).

The spelling of 11865307222120 in words is "eleven trillion, eight hundred sixty-five billion, three hundred seven million, two hundred twenty-two thousand, one hundred twenty".