121131324 has 36 divisors (see below), whose sum is σ = 324206064. Its totient is φ = 38001792.

The previous prime is 121131323. The next prime is 121131349. The reversal of 121131324 is 423131121.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 121131297 and 121131306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121131323) 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 11 ways as a sum of consecutive naturals, for example, 98352 + ... + 99575.

It is an arithmetic number, because the mean of its divisors is an integer number (9005724).

Almost surely, 2^121131324 is an apocalyptic number.

It is an amenable number.

121131324 is an abundant number, since it is smaller than the sum of its proper divisors (203074740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121131324 is a wasteful number, since it uses less digits than its factorization.

121131324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197954 (or 197949 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 121131324 is about 11005.9676539594. The cubic root of 121131324 is about 494.7876162649.

Adding to 121131324 its reverse (423131121), we get a palindrome (544262445).

The spelling of 121131324 in words is "one hundred twenty-one million, one hundred thirty-one thousand, three hundred twenty-four".