121020210013 has 2 divisors, whose sum is σ = 121020210014. Its totient is φ = 121020210012.

The previous prime is 121020209963. The next prime is 121020210037. The reversal of 121020210013 is 310012020121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88106267929 + 32913942084 = 296827^2 + 181422^2 .

It is a cyclic number.

It is not a de Polignac number, because 121020210013 - 2²¹ = 121018112861 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121020209975 and 121020210002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121020210053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60510105006 + 60510105007.

It is an arithmetic number, because the mean of its divisors is an integer number (60510105007).

Almost surely, 2^121020210013 is an apocalyptic number.

It is an amenable number.

121020210013 is a deficient number, since it is larger than the sum of its proper divisors (1).

121020210013 is an equidigital number, since it uses as much as digits as its factorization.

121020210013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 121020210013 its reverse (310012020121), we get a palindrome (431032230134).

The spelling of 121020210013 in words is "one hundred twenty-one billion, twenty million, two hundred ten thousand, thirteen".