121685941343 has 2 divisors, whose sum is σ = 121685941344. Its totient is φ = 121685941342.

The previous prime is 121685941339. The next prime is 121685941361. The reversal of 121685941343 is 343149586121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121685941343 - 2² = 121685941339 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121685941373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60842970671 + 60842970672.

It is an arithmetic number, because the mean of its divisors is an integer number (60842970672).

Almost surely, 2^121685941343 is an apocalyptic number.

121685941343 is a deficient number, since it is larger than the sum of its proper divisors (1).

121685941343 is an equidigital number, since it uses as much as digits as its factorization.

121685941343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 47.

The spelling of 121685941343 in words is "one hundred twenty-one billion, six hundred eighty-five million, nine hundred forty-one thousand, three hundred forty-three".