11201043111550 has 12 divisors (see below), whose sum is σ = 20833940187576. Its totient is φ = 4480417244600.

The previous prime is 11201043111497. The next prime is 11201043111553. The reversal of 11201043111550 is 5511134010211.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11201043111553) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 112010431066 + ... + 112010431165.

It is an arithmetic number, because the mean of its divisors is an integer number (1736161682298).

Almost surely, 2^{11201043111550} is an apocalyptic number.

11201043111550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11201043111550 is a deficient number, since it is larger than the sum of its proper divisors (9632897076026).

11201043111550 is a wasteful number, since it uses less digits than its factorization.

11201043111550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224020862243 (or 224020862238 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 25.

Adding to 11201043111550 its reverse (5511134010211), we get a palindrome (16712177121761).

The spelling of 11201043111550 in words is "eleven trillion, two hundred one billion, forty-three million, one hundred eleven thousand, five hundred fifty".