10121163050021 has 2 divisors, whose sum is σ = 10121163050022. Its totient is φ = 10121163050020.

The previous prime is 10121163050003. The next prime is 10121163050059. The reversal of 10121163050021 is 12005036112101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9978459676900 + 142703373121 = 3158870^2 + 377761^2 .

It is an emirp because it is prime and its reverse (12005036112101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10121163050021 - 2¹⁴ = 10121163033637 is a prime.

It is a super-2 number, since 2×10121163050021² (a number of 27 digits) contains 22 as substring.

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 (10121163050221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060581525010 + 5060581525011.

It is an arithmetic number, because the mean of its divisors is an integer number (5060581525011).

Almost surely, 2^{10121163050021} is an apocalyptic number.

It is an amenable number.

10121163050021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10121163050021 is an equidigital number, since it uses as much as digits as its factorization.

10121163050021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 23.

Adding to 10121163050021 its reverse (12005036112101), we get a palindrome (22126199162122).

The spelling of 10121163050021 in words is "ten trillion, one hundred twenty-one billion, one hundred sixty-three million, fifty thousand, twenty-one".