121413043309 has 2 divisors, whose sum is σ = 121413043310. Its totient is φ = 121413043308.

The previous prime is 121413043289. The next prime is 121413043313. The reversal of 121413043309 is 903340314121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115080385225 + 6332658084 = 339235^2 + 79578^2 .

It is a cyclic number.

It is not a de Polignac number, because 121413043309 - 2⁷ = 121413043181 is a prime.

It is a super-2 number, since 2×121413043309² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121413047309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60706521654 + 60706521655.

It is an arithmetic number, because the mean of its divisors is an integer number (60706521655).

Almost surely, 2^121413043309 is an apocalyptic number.

It is an amenable number.

121413043309 is a deficient number, since it is larger than the sum of its proper divisors (1).

121413043309 is an equidigital number, since it uses as much as digits as its factorization.

121413043309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 31.

The spelling of 121413043309 in words is "one hundred twenty-one billion, four hundred thirteen million, forty-three thousand, three hundred nine".