121232547 has 12 divisors (see below), whose sum is σ = 177728200. Its totient is φ = 79615008.

The previous prime is 121232513. The next prime is 121232561. The reversal of 121232547 is 745232121.

It is not a de Polignac number, because 121232547 - 2⁸ = 121232291 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121232547.

It is not an unprimeable number, because it can be changed into a prime (121232567) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 99922 + ... + 101127.

Almost surely, 2^121232547 is an apocalyptic number.

121232547 is a deficient number, since it is larger than the sum of its proper divisors (56495653).

121232547 is a wasteful number, since it uses less digits than its factorization.

121232547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201122 (or 201119 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 121232547 is about 11010.5652443460. The cubic root of 121232547 is about 494.9254004506.

Adding to 121232547 its reverse (745232121), we get a palindrome (866464668).

The spelling of 121232547 in words is "one hundred twenty-one million, two hundred thirty-two thousand, five hundred forty-seven".