121232224231 has 4 divisors (see below), whose sum is σ = 121259211192. Its totient is φ = 121205237272.

The previous prime is 121232224229. The next prime is 121232224259. The reversal of 121232224231 is 132422232121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121232224231 - 2¹ = 121232224229 is a prime.

It is a super-2 number, since 2×121232224231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121232224196 and 121232224205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121232224331) 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, 13486741 + ... + 13495726.

It is an arithmetic number, because the mean of its divisors is an integer number (30314802798).

Almost surely, 2^121232224231 is an apocalyptic number.

121232224231 is a deficient number, since it is larger than the sum of its proper divisors (26986961).

121232224231 is an equidigital number, since it uses as much as digits as its factorization.

121232224231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26986960.

The product of its digits is 2304, while the sum is 25.

Adding to 121232224231 its reverse (132422232121), we get a palindrome (253654456352).

The spelling of 121232224231 in words is "one hundred twenty-one billion, two hundred thirty-two million, two hundred twenty-four thousand, two hundred thirty-one".