201100000155 has 16 divisors (see below), whose sum is σ = 324216186624. Its totient is φ = 106434604640.

The previous prime is 201100000117. The next prime is 201100000159. The reversal of 201100000155 is 551000001102.

It is not a de Polignac number, because 201100000155 - 2⁷ = 201100000027 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (201100000159) 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, 51168519 + ... + 51172448.

It is an arithmetic number, because the mean of its divisors is an integer number (20263511664).

Almost surely, 2^201100000155 is an apocalyptic number.

201100000155 is a deficient number, since it is larger than the sum of its proper divisors (123116186469).

201100000155 is a wasteful number, since it uses less digits than its factorization.

201100000155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102341106.

The product of its (nonzero) digits is 50, while the sum is 15.

Adding to 201100000155 its reverse (551000001102), we get a palindrome (752100001257).

The spelling of 201100000155 in words is "two hundred one billion, one hundred million, one hundred fifty-five", and thus it is an aban number.