121434400019 has 2 divisors, whose sum is σ = 121434400020. Its totient is φ = 121434400018.

The previous prime is 121434400013. The next prime is 121434400039. The reversal of 121434400019 is 910004434121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121434400019 - 2²⁰ = 121433351443 is a prime.

It is a super-2 number, since 2×121434400019² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 121434399964 and 121434400000.

It is not a weakly prime, because it can be changed into another prime (121434400013) 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, 60717200009 + 60717200010.

It is an arithmetic number, because the mean of its divisors is an integer number (60717200010).

Almost surely, 2^121434400019 is an apocalyptic number.

121434400019 is a deficient number, since it is larger than the sum of its proper divisors (1).

121434400019 is an equidigital number, since it uses as much as digits as its factorization.

121434400019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

The spelling of 121434400019 in words is "one hundred twenty-one billion, four hundred thirty-four million, four hundred thousand, nineteen".