121331013301021 has 2 divisors, whose sum is σ = 121331013301022. Its totient is φ = 121331013301020.

The previous prime is 121331013300983. The next prime is 121331013301037. The reversal of 121331013301021 is 120103310133121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83946165381796 + 37384847919225 = 9162214^2 + 6114315^2 .

It is a cyclic number.

It is not a de Polignac number, because 121331013301021 - 2²¹ = 121331011203869 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121331013300983 and 121331013301001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121331013301051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60665506650510 + 60665506650511.

It is an arithmetic number, because the mean of its divisors is an integer number (60665506650511).

Almost surely, 2^{121331013301021} is an apocalyptic number.

It is an amenable number.

121331013301021 is a deficient number, since it is larger than the sum of its proper divisors (1).

121331013301021 is an equidigital number, since it uses as much as digits as its factorization.

121331013301021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 121331013301021 its reverse (120103310133121), we get a palindrome (241434323434142).

The spelling of 121331013301021 in words is "one hundred twenty-one trillion, three hundred thirty-one billion, thirteen million, three hundred one thousand, twenty-one".