2021121000163 has 2 divisors, whose sum is σ = 2021121000164. Its totient is φ = 2021121000162.

The previous prime is 2021121000121. The next prime is 2021121000167. The reversal of 2021121000163 is 3610001211202.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2021121000163 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2021121000163.

It is not a weakly prime, because it can be changed into another prime (2021121000167) 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, 1010560500081 + 1010560500082.

It is an arithmetic number, because the mean of its divisors is an integer number (1010560500082).

Almost surely, 2^{2021121000163} is an apocalyptic number.

2021121000163 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021121000163 is an equidigital number, since it uses as much as digits as its factorization.

2021121000163 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 19.

Adding to 2021121000163 its reverse (3610001211202), we get a palindrome (5631122211365).

The spelling of 2021121000163 in words is "two trillion, twenty-one billion, one hundred twenty-one million, one hundred sixty-three", and thus it is an aban number.