201100122105 has 16 divisors (see below), whose sum is σ = 321993219264. Its totient is φ = 107175723840.

The previous prime is 201100122001. The next prime is 201100122121. The reversal of 201100122105 is 501221001102.

It is not a de Polignac number, because 201100122105 - 2⁷ = 201100121977 is a prime.

It is a super-2 number, since 2×201100122105² (a number of 23 digits) contains 22 as substring.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4833259 + ... + 4874688.

It is an arithmetic number, because the mean of its divisors is an integer number (20124576204).

Almost surely, 2^201100122105 is an apocalyptic number.

It is an amenable number.

201100122105 is a deficient number, since it is larger than the sum of its proper divisors (120893097159).

201100122105 is a wasteful number, since it uses less digits than its factorization.

201100122105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9709336.

The product of its (nonzero) digits is 40, while the sum is 15.

Adding to 201100122105 its reverse (501221001102), we get a palindrome (702321123207).

The spelling of 201100122105 in words is "two hundred one billion, one hundred million, one hundred twenty-two thousand, one hundred five".