121032540243 has 24 divisors (see below), whose sum is σ = 184082492880. Its totient is φ = 76418173440.

The previous prime is 121032540241. The next prime is 121032540271. The reversal of 121032540243 is 342045230121.

121032540243 is a `hidden beast` number, since 1 + 210 + 3 + 2 + 5 + 402 + 43 = 666.

It is not a de Polignac number, because 121032540243 - 2¹ = 121032540241 is a prime.

It is a super-3 number, since 3×121032540243³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (121032540241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 459703 + ... + 673343.

It is an arithmetic number, because the mean of its divisors is an integer number (7670103870).

Almost surely, 2^121032540243 is an apocalyptic number.

121032540243 is a deficient number, since it is larger than the sum of its proper divisors (63049952637).

121032540243 is a wasteful number, since it uses less digits than its factorization.

121032540243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216979 (or 216976 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 121032540243 its reverse (342045230121), we get a palindrome (463077770364).

The spelling of 121032540243 in words is "one hundred twenty-one billion, thirty-two million, five hundred forty thousand, two hundred forty-three".