121388331253229 has 2 divisors, whose sum is σ = 121388331253230. Its totient is φ = 121388331253228.

The previous prime is 121388331253213. The next prime is 121388331253249. The reversal of 121388331253229 is 922352133883121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69194497532329 + 52193833720900 = 8318323^2 + 7224530^2 .

It is a cyclic number.

It is not a de Polignac number, because 121388331253229 - 2⁴ = 121388331253213 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121388331253249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60694165626614 + 60694165626615.

It is an arithmetic number, because the mean of its divisors is an integer number (60694165626615).

Almost surely, 2^{121388331253229} is an apocalyptic number.

It is an amenable number.

121388331253229 is a deficient number, since it is larger than the sum of its proper divisors (1).

121388331253229 is an equidigital number, since it uses as much as digits as its factorization.

121388331253229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3732480, while the sum is 53.

The spelling of 121388331253229 in words is "one hundred twenty-one trillion, three hundred eighty-eight billion, three hundred thirty-one million, two hundred fifty-three thousand, two hundred twenty-nine".