121334531 has 2 divisors, whose sum is σ = 121334532. Its totient is φ = 121334530.

The previous prime is 121334509. The next prime is 121334533. The reversal of 121334531 is 135433121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121334531 - 2¹⁰ = 121333507 is a prime.

It is a super-2 number, since 2×121334531² = 29444136825979922, which contains 22 as substring.

Together with 121334533, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 121334497 and 121334506.

It is not a weakly prime, because it can be changed into another prime (121334533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60667265 + 60667266.

It is an arithmetic number, because the mean of its divisors is an integer number (60667266).

Almost surely, 2^121334531 is an apocalyptic number.

121334531 is a deficient number, since it is larger than the sum of its proper divisors (1).

121334531 is an equidigital number, since it uses as much as digits as its factorization.

121334531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 23.

The square root of 121334531 is about 11015.1954590012. The cubic root of 121334531 is about 495.0641429650.

Adding to 121334531 its reverse (135433121), we get a palindrome (256767652).

The spelling of 121334531 in words is "one hundred twenty-one million, three hundred thirty-four thousand, five hundred thirty-one".