121540433233 has 8 divisors (see below), whose sum is σ = 135463021920. Its totient is φ = 108370416960.

The previous prime is 121540433221. The next prime is 121540433269. The reversal of 121540433233 is 332334045121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121540433233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121540433195 and 121540433204.

It is not an unprimeable number, because it can be changed into a prime (121540433293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188142763 + ... + 188143408.

It is an arithmetic number, because the mean of its divisors is an integer number (16932877740).

Almost surely, 2^121540433233 is an apocalyptic number.

It is an amenable number.

121540433233 is a deficient number, since it is larger than the sum of its proper divisors (13922588687).

121540433233 is a wasteful number, since it uses less digits than its factorization.

121540433233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376286207.

The product of its (nonzero) digits is 25920, while the sum is 31.

Adding to 121540433233 its reverse (332334045121), we get a palindrome (453874478354).

The spelling of 121540433233 in words is "one hundred twenty-one billion, five hundred forty million, four hundred thirty-three thousand, two hundred thirty-three".