11155200001 has 16 divisors (see below), whose sum is σ = 12595924800. Its totient is φ = 9785966400.

The previous prime is 11155199999. The next prime is 11155200011. The reversal of 11155200001 is 10000255111.

It is a cyclic number.

It is not a de Polignac number, because 11155200001 - 2¹ = 11155199999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11155200011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 632815 + ... + 650203.

It is an arithmetic number, because the mean of its divisors is an integer number (787245300).

Almost surely, 2^11155200001 is an apocalyptic number.

11155200001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11155200001 is a deficient number, since it is larger than the sum of its proper divisors (1440724799).

11155200001 is a wasteful number, since it uses less digits than its factorization.

11155200001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19440.

The product of its (nonzero) digits is 50, while the sum is 16.

Adding to 11155200001 its reverse (10000255111), we get a palindrome (21155455112).

The spelling of 11155200001 in words is "eleven billion, one hundred fifty-five million, two hundred thousand, one".