112121993 has 4 divisors (see below), whose sum is σ = 113701248. Its totient is φ = 110542740.

The previous prime is 112121981. The next prime is 112122001. The reversal of 112121993 is 399121211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 399121211 = 67 ⋅5957033.

It is not a de Polignac number, because 112121993 - 2⁶ = 112121929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112121903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 789521 + ... + 789662.

It is an arithmetic number, because the mean of its divisors is an integer number (28425312).

Almost surely, 2^112121993 is an apocalyptic number.

It is an amenable number.

112121993 is a deficient number, since it is larger than the sum of its proper divisors (1579255).

112121993 is an equidigital number, since it uses as much as digits as its factorization.

112121993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1579254.

The product of its digits is 972, while the sum is 29.

The square root of 112121993 is about 10588.7673031378. The cubic root of 112121993 is about 482.2034015246.

The spelling of 112121993 in words is "one hundred twelve million, one hundred twenty-one thousand, nine hundred ninety-three".