19120002111 has 24 divisors (see below), whose sum is σ = 31701032480. Its totient is φ = 10877996736.

The previous prime is 19120002107. The next prime is 19120002127. The reversal of 19120002111 is 11120002191.

It is a happy number.

It is not a de Polignac number, because 19120002111 - 2² = 19120002107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19120002131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 648220 + ... + 677073.

Almost surely, 2^19120002111 is an apocalyptic number.

19120002111 is a deficient number, since it is larger than the sum of its proper divisors (12581030369).

19120002111 is a wasteful number, since it uses less digits than its factorization.

19120002111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325535 (or 1325532 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

The spelling of 19120002111 in words is "nineteen billion, one hundred twenty million, two thousand, one hundred eleven".