121424443313 has 2 divisors, whose sum is σ = 121424443314. Its totient is φ = 121424443312.

The previous prime is 121424443303. The next prime is 121424443319. The reversal of 121424443313 is 313344424121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85759365409 + 35665077904 = 292847^2 + 188852^2 .

It is an emirp because it is prime and its reverse (313344424121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121424443313 - 2⁴ = 121424443297 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121424443313.

It is not a weakly prime, because it can be changed into another prime (121424443319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60712221656 + 60712221657.

It is an arithmetic number, because the mean of its divisors is an integer number (60712221657).

Almost surely, 2^121424443313 is an apocalyptic number.

It is an amenable number.

121424443313 is a deficient number, since it is larger than the sum of its proper divisors (1).

121424443313 is an equidigital number, since it uses as much as digits as its factorization.

121424443313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 32.

Adding to 121424443313 its reverse (313344424121), we get a palindrome (434768867434).

The spelling of 121424443313 in words is "one hundred twenty-one billion, four hundred twenty-four million, four hundred forty-three thousand, three hundred thirteen".