121111043 has 4 divisors (see below), whose sum is σ = 128235240. Its totient is φ = 113986848.

The previous prime is 121111037. The next prime is 121111051. The reversal of 121111043 is 340111121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121111043 - 2¹⁸ = 120848899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121111093) 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, 3562073 + ... + 3562106.

It is an arithmetic number, because the mean of its divisors is an integer number (32058810).

Almost surely, 2^121111043 is an apocalyptic number.

121111043 is a deficient number, since it is larger than the sum of its proper divisors (7124197).

121111043 is an equidigital number, since it uses as much as digits as its factorization.

121111043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7124196.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 121111043 is about 11005.0462516066. The cubic root of 121111043 is about 494.7600006507.

Adding to 121111043 its reverse (340111121), we get a palindrome (461222164).

The spelling of 121111043 in words is "one hundred twenty-one million, one hundred eleven thousand, forty-three".