1912111100201 has 4 divisors (see below), whose sum is σ = 1916674611600. Its totient is φ = 1907547588804.

The previous prime is 1912111100173. The next prime is 1912111100209. The reversal of 1912111100201 is 1020011112191.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1912111100201 - 2³⁸ = 1637233193257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1912111100209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2281755071 + ... + 2281755908.

It is an arithmetic number, because the mean of its divisors is an integer number (479168652900).

Almost surely, 2^{1912111100201} is an apocalyptic number.

It is an amenable number.

1912111100201 is a deficient number, since it is larger than the sum of its proper divisors (4563511399).

1912111100201 is an equidigital number, since it uses as much as digits as its factorization.

1912111100201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4563511398.

The product of its (nonzero) digits is 36, while the sum is 20.

Adding to 1912111100201 its reverse (1020011112191), we get a palindrome (2932122212392).

The spelling of 1912111100201 in words is "one trillion, nine hundred twelve billion, one hundred eleven million, one hundred thousand, two hundred one".