19121111112112 has 20 divisors (see below), whose sum is σ = 37233319382800. Its totient is φ = 9512512561728.

The previous prime is 19121111112053. The next prime is 19121111112149. The reversal of 19121111112112 is 21121111112191.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3002683863 + ... + 3002690230.

It is an arithmetic number, because the mean of its divisors is an integer number (1861665969140).

Almost surely, 2^{19121111112112} is an apocalyptic number.

It is an amenable number.

19121111112112 is a deficient number, since it is larger than the sum of its proper divisors (18112208270688).

19121111112112 is a wasteful number, since it uses less digits than its factorization.

19121111112112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6005374300 (or 6005374294 counting only the distinct ones).

The product of its digits is 72, while the sum is 25.

The spelling of 19121111112112 in words is "nineteen trillion, one hundred twenty-one billion, one hundred eleven million, one hundred twelve thousand, one hundred twelve".