121023231 has 8 divisors (see below), whose sum is σ = 184416384. Its totient is φ = 69156120.

The previous prime is 121023209. The next prime is 121023257. The reversal of 121023231 is 132320121.

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

It is not a de Polignac number, because 121023231 - 2¹¹ = 121021183 is a prime.

It is a super-2 number, since 2×121023231² = 29293244883358722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121023231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121023271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2881485 + ... + 2881526.

It is an arithmetic number, because the mean of its divisors is an integer number (23052048).

Almost surely, 2^121023231 is an apocalyptic number.

121023231 is a deficient number, since it is larger than the sum of its proper divisors (63393153).

121023231 is an equidigital number, since it uses as much as digits as its factorization.

121023231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5763021.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 121023231 is about 11001.0559038667. The cubic root of 121023231 is about 494.6403958964.

Adding to 121023231 its reverse (132320121), we get a palindrome (253343352).

The spelling of 121023231 in words is "one hundred twenty-one million, twenty-three thousand, two hundred thirty-one".