1121111192 has 16 divisors (see below), whose sum is σ = 2136544800. Its totient is φ = 551365920.

The previous prime is 1121111161. The next prime is 1121111209. The reversal of 1121111192 is 2911111211.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1148192 + ... + 1149167.

It is an arithmetic number, because the mean of its divisors is an integer number (133534050).

Almost surely, 2^1121111192 is an apocalyptic number.

It is an amenable number.

1121111192 is a deficient number, since it is larger than the sum of its proper divisors (1015433608).

1121111192 is a wasteful number, since it uses less digits than its factorization.

1121111192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2297426 (or 2297422 counting only the distinct ones).

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

The square root of 1121111192 is about 33482.9985515037. The cubic root of 1121111192 is about 1038.8421507748.

The spelling of 1121111192 in words is "one billion, one hundred twenty-one million, one hundred eleven thousand, one hundred ninety-two".