121548331 has 2 divisors, whose sum is σ = 121548332. Its totient is φ = 121548330.

The previous prime is 121548311. The next prime is 121548347. The reversal of 121548331 is 133845121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121548331 - 2²³ = 113159723 is a prime.

It is a super-2 number, since 2×121548331² = 29547993537771122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121548331.

It is not a weakly prime, because it can be changed into another prime (121548311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60774165 + 60774166.

It is an arithmetic number, because the mean of its divisors is an integer number (60774166).

Almost surely, 2^121548331 is an apocalyptic number.

121548331 is a deficient number, since it is larger than the sum of its proper divisors (1).

121548331 is an equidigital number, since it uses as much as digits as its factorization.

121548331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 28.

The square root of 121548331 is about 11024.8959632280. The cubic root of 121548331 is about 495.3547516512.

The spelling of 121548331 in words is "one hundred twenty-one million, five hundred forty-eight thousand, three hundred thirty-one".