121045439539 has 2 divisors, whose sum is σ = 121045439540. Its totient is φ = 121045439538.

The previous prime is 121045439527. The next prime is 121045439551. The reversal of 121045439539 is 935934540121.

It is a balanced prime because it is at equal distance from previous prime (121045439527) and next prime (121045439551).

It is a cyclic number.

It is not a de Polignac number, because 121045439539 - 2¹⁷ = 121045308467 is a prime.

It is not a weakly prime, because it can be changed into another prime (121045439839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60522719769 + 60522719770.

It is an arithmetic number, because the mean of its divisors is an integer number (60522719770).

Almost surely, 2^121045439539 is an apocalyptic number.

121045439539 is a deficient number, since it is larger than the sum of its proper divisors (1).

121045439539 is an equidigital number, since it uses as much as digits as its factorization.

121045439539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 583200, while the sum is 46.

The spelling of 121045439539 in words is "one hundred twenty-one billion, forty-five million, four hundred thirty-nine thousand, five hundred thirty-nine".