121330231012021 has 2 divisors, whose sum is σ = 121330231012022. Its totient is φ = 121330231012020.

The previous prime is 121330231011943. The next prime is 121330231012051. The reversal of 121330231012021 is 120210132033121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108834677652996 + 12495553359025 = 10432386^2 + 3534905^2 .

It is a cyclic number.

It is not a de Polignac number, because 121330231012021 - 2¹⁹ = 121330230487733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121330231011983 and 121330231012001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121330231012051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60665115506010 + 60665115506011.

It is an arithmetic number, because the mean of its divisors is an integer number (60665115506011).

Almost surely, 2^{121330231012021} is an apocalyptic number.

It is an amenable number.

121330231012021 is a deficient number, since it is larger than the sum of its proper divisors (1).

121330231012021 is an equidigital number, since it uses as much as digits as its factorization.

121330231012021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 121330231012021 its reverse (120210132033121), we get a palindrome (241540363045142).

The spelling of 121330231012021 in words is "one hundred twenty-one trillion, three hundred thirty billion, two hundred thirty-one million, twelve thousand, twenty-one".