2001012021163 has 2 divisors, whose sum is σ = 2001012021164. Its totient is φ = 2001012021162.

The previous prime is 2001012021103. The next prime is 2001012021181. The reversal of 2001012021163 is 3611202101002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2001012021163 - 2¹³ = 2001012012971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2001012021163.

It is not a weakly prime, because it can be changed into another prime (2001012021103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000506010581 + 1000506010582.

It is an arithmetic number, because the mean of its divisors is an integer number (1000506010582).

Almost surely, 2^{2001012021163} is an apocalyptic number.

2001012021163 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001012021163 is an equidigital number, since it uses as much as digits as its factorization.

2001012021163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 2001012021163 its reverse (3611202101002), we get a palindrome (5612214122165).

The spelling of 2001012021163 in words is "two trillion, one billion, twelve million, twenty-one thousand, one hundred sixty-three".