2121020063 has 2 divisors, whose sum is σ = 2121020064. Its totient is φ = 2121020062.

The previous prime is 2121020051. The next prime is 2121020071. The reversal of 2121020063 is 3600201212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2121020063 - 2¹⁴ = 2121003679 is a prime.

It is a super-2 number, since 2×2121020063² = 8997452215297047938, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121020563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060510031 + 1060510032.

It is an arithmetic number, because the mean of its divisors is an integer number (1060510032).

Almost surely, 2^2121020063 is an apocalyptic number.

2121020063 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121020063 is an equidigital number, since it uses as much as digits as its factorization.

2121020063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2121020063 is about 46054.5335770541. The cubic root of 2121020063 is about 1284.8376632324.

Adding to 2121020063 its reverse (3600201212), we get a palindrome (5721221275).

The spelling of 2121020063 in words is "two billion, one hundred twenty-one million, twenty thousand, sixty-three".