121113231 has 8 divisors (see below), whose sum is σ = 161973504. Its totient is φ = 80497560.

The previous prime is 121113229. The next prime is 121113233. The reversal of 121113231 is 132311121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (121113229) and next prime (121113233).

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

It is not a de Polignac number, because 121113231 - 2¹ = 121113229 is a prime.

It is a super-2 number, since 2×121113231² = 29336829446518722, 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 121113231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121113233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59991 + ... + 61976.

It is an arithmetic number, because the mean of its divisors is an integer number (20246688).

Almost surely, 2^121113231 is an apocalyptic number.

121113231 is a deficient number, since it is larger than the sum of its proper divisors (40860273).

121113231 is a wasteful number, since it uses less digits than its factorization.

121113231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122301.

The product of its digits is 36, while the sum is 15.

The square root of 121113231 is about 11005.1456600992. The cubic root of 121113231 is about 494.7629800882.

Adding to 121113231 its reverse (132311121), we get a palindrome (253424352).

The spelling of 121113231 in words is "one hundred twenty-one million, one hundred thirteen thousand, two hundred thirty-one".