121404006643 has 2 divisors, whose sum is σ = 121404006644. Its totient is φ = 121404006642.

The previous prime is 121404006631. The next prime is 121404006671. The reversal of 121404006643 is 346600404121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121404006643 - 2⁵ = 121404006611 is a prime.

It is not a weakly prime, because it can be changed into another prime (121404006043) 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, 60702003321 + 60702003322.

It is an arithmetic number, because the mean of its divisors is an integer number (60702003322).

Almost surely, 2^121404006643 is an apocalyptic number.

121404006643 is a deficient number, since it is larger than the sum of its proper divisors (1).

121404006643 is an equidigital number, since it uses as much as digits as its factorization.

121404006643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 31.

The spelling of 121404006643 in words is "one hundred twenty-one billion, four hundred four million, six thousand, six hundred forty-three".