121110120243 has 48 divisors (see below), whose sum is σ = 213156725760. Its totient is φ = 67733284752.

The previous prime is 121110120233. The next prime is 121110120311. The reversal of 121110120243 is 342021011121.

It is not a de Polignac number, because 121110120243 - 2⁸ = 121110119987 is a prime.

It is a super-2 number, since 2×121110120243² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121110120233) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 911671 + ... + 1036032.

It is an arithmetic number, because the mean of its divisors is an integer number (4440765120).

Almost surely, 2^121110120243 is an apocalyptic number.

121110120243 is a deficient number, since it is larger than the sum of its proper divisors (92046605517).

121110120243 is a wasteful number, since it uses less digits than its factorization.

121110120243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1947773 (or 1947760 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 121110120243 its reverse (342021011121), we get a palindrome (463131131364).

The spelling of 121110120243 in words is "one hundred twenty-one billion, one hundred ten million, one hundred twenty thousand, two hundred forty-three".