121441904851 has 2 divisors, whose sum is σ = 121441904852. Its totient is φ = 121441904850.

The previous prime is 121441904777. The next prime is 121441904951. The reversal of 121441904851 is 158409144121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121441904851 - 2¹⁷ = 121441773779 is a prime.

It is not a weakly prime, because it can be changed into another prime (121441904251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60720952425 + 60720952426.

It is an arithmetic number, because the mean of its divisors is an integer number (60720952426).

Almost surely, 2^121441904851 is an apocalyptic number.

121441904851 is a deficient number, since it is larger than the sum of its proper divisors (1).

121441904851 is an equidigital number, since it uses as much as digits as its factorization.

121441904851 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46080, while the sum is 40.

The spelling of 121441904851 in words is "one hundred twenty-one billion, four hundred forty-one million, nine hundred four thousand, eight hundred fifty-one".