121192112 has 10 divisors (see below), whose sum is σ = 234809748. Its totient is φ = 60596048.

The previous prime is 121192111. The next prime is 121192117. The reversal of 121192112 is 211291121.

It is a super-2 number, since 2×121192112² = 29375056022041088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121192111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3787238 + ... + 3787269.

Almost surely, 2^121192112 is an apocalyptic number.

It is an amenable number.

121192112 is a deficient number, since it is larger than the sum of its proper divisors (113617636).

121192112 is an equidigital number, since it uses as much as digits as its factorization.

121192112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7574515 (or 7574509 counting only the distinct ones).

The product of its digits is 72, while the sum is 20.

The square root of 121192112 is about 11008.7289002864. The cubic root of 121192112 is about 494.8703697558.

Subtracting 121192112 from its reverse (211291121), we obtain a palindrome (90099009).

The spelling of 121192112 in words is "one hundred twenty-one million, one hundred ninety-two thousand, one hundred twelve".