19112121201011 has 2 divisors, whose sum is σ = 19112121201012. Its totient is φ = 19112121201010.

The previous prime is 19112121200969. The next prime is 19112121201029. The reversal of 19112121201011 is 11010212121191.

It is a strong prime.

It is an emirp because it is prime and its reverse (11010212121191) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19112121201011 - 2⁶ = 19112121200947 is a prime.

It is not a weakly prime, because it can be changed into another prime (19112121203011) 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 as a sum of consecutive naturals, namely, 9556060600505 + 9556060600506.

It is an arithmetic number, because the mean of its divisors is an integer number (9556060600506).

Almost surely, 2^{19112121201011} is an apocalyptic number.

19112121201011 is a deficient number, since it is larger than the sum of its proper divisors (1).

19112121201011 is an equidigital number, since it uses as much as digits as its factorization.

19112121201011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 23.

The spelling of 19112121201011 in words is "nineteen trillion, one hundred twelve billion, one hundred twenty-one million, two hundred one thousand, eleven".