11550120102 has 64 divisors (see below), whose sum is σ = 27215366400. Its totient is φ = 3620738880.

The previous prime is 11550120097. The next prime is 11550120107. The reversal of 11550120102 is 20102105511.

11550120102 is a `hidden beast` number, since 1 + 1 + 550 + 12 + 0 + 102 = 666.

It is an interprime number because it is at equal distance from previous prime (11550120097) and next prime (11550120107).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11550120107) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 99477 + ... + 181647.

It is an arithmetic number, because the mean of its divisors is an integer number (425240100).

Almost surely, 2^11550120102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11550120102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13607683200).

11550120102 is an abundant number, since it is smaller than the sum of its proper divisors (15665246298).

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

11550120102 is a wasteful number, since it uses less digits than its factorization.

11550120102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82338 (or 82332 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

Adding to 11550120102 its reverse (20102105511), we get a palindrome (31652225613).

The spelling of 11550120102 in words is "eleven billion, five hundred fifty million, one hundred twenty thousand, one hundred two".