1192112111921 has 8 divisors (see below), whose sum is σ = 1222756511400. Its totient is φ = 1161769628032.

The previous prime is 1192112111857. The next prime is 1192112111923. The reversal of 1192112111921 is 1291112112911.

It can be written as a sum of positive squares in 4 ways, for example, as 117439863025 + 1074672248896 = 342695^2 + 1036664^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1192112111921 - 2⁶ = 1192112111857 is a prime.

It is a super-2 number, since 2×1192112111921² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1192112111923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75470900 + ... + 75486693.

It is an arithmetic number, because the mean of its divisors is an integer number (152844563925).

Almost surely, 2^{1192112111921} is an apocalyptic number.

It is an amenable number.

1192112111921 is a deficient number, since it is larger than the sum of its proper divisors (30644399479).

1192112111921 is a wasteful number, since it uses less digits than its factorization.

1192112111921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150957795.

The product of its digits is 648, while the sum is 32.

The spelling of 1192112111921 in words is "one trillion, one hundred ninety-two billion, one hundred twelve million, one hundred eleven thousand, nine hundred twenty-one".