10191121 has 4 divisors (see below), whose sum is σ = 10204272. Its totient is φ = 10177972.

The previous prime is 10191119. The next prime is 10191133. The reversal of 10191121 is 12119101.

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: 12119101 = 1741 ⋅6961.

It is a cyclic number.

It is not a de Polignac number, because 10191121 - 2¹ = 10191119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10191095 and 10191104.

It is not an unprimeable number, because it can be changed into a prime (10191101) 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, 5335 + ... + 6988.

It is an arithmetic number, because the mean of its divisors is an integer number (2551068).

Almost surely, 2^10191121 is an apocalyptic number.

It is an amenable number.

10191121 is a deficient number, since it is larger than the sum of its proper divisors (13151).

10191121 is an equidigital number, since it uses as much as digits as its factorization.

10191121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13150.

The product of its (nonzero) digits is 18, while the sum is 16.

The square root of 10191121 is about 3192.3535205237. The cubic root of 10191121 is about 216.8073424368.

The spelling of 10191121 in words is "ten million, one hundred ninety-one thousand, one hundred twenty-one".