2002201000081 has 2 divisors, whose sum is σ = 2002201000082. Its totient is φ = 2002201000080.

The previous prime is 2002201000003. The next prime is 2002201000181. The reversal of 2002201000081 is 1800001022002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1928651560081 + 73549440000 = 1388759^2 + 271200^2 .

It is a cyclic number.

It is not a de Polignac number, because 2002201000081 - 2¹¹ = 2002200998033 is a prime.

It is a super-2 number, since 2×2002201000081² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2002201000181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001100500040 + 1001100500041.

It is an arithmetic number, because the mean of its divisors is an integer number (1001100500041).

Almost surely, 2^{2002201000081} is an apocalyptic number.

It is an amenable number.

2002201000081 is a deficient number, since it is larger than the sum of its proper divisors (1).

2002201000081 is an equidigital number, since it uses as much as digits as its factorization.

2002201000081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2002201000081 its reverse (1800001022002), we get a palindrome (3802202022083).

The spelling of 2002201000081 in words is "two trillion, two billion, two hundred one million, eighty-one", and thus it is an aban number.