121111120343 has 4 divisors (see below), whose sum is σ = 121111887600. Its totient is φ = 121110353088.

The previous prime is 121111120331. The next prime is 121111120373. The reversal of 121111120343 is 343021111121.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 121111120343 - 2¹⁸ = 121110858199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121111120373) 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, 50330 + ... + 494727.

It is an arithmetic number, because the mean of its divisors is an integer number (30277971900).

Almost surely, 2^121111120343 is an apocalyptic number.

121111120343 is a deficient number, since it is larger than the sum of its proper divisors (767257).

121111120343 is an equidigital number, since it uses as much as digits as its factorization.

121111120343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767256.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 121111120343 its reverse (343021111121), we get a palindrome (464132231464).

The spelling of 121111120343 in words is "one hundred twenty-one billion, one hundred eleven million, one hundred twenty thousand, three hundred forty-three".