20202000001081 has 2 divisors, whose sum is σ = 20202000001082. Its totient is φ = 20202000001080.

The previous prime is 20202000001049. The next prime is 20202000001109. The reversal of 20202000001081 is 18010000020202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15787311555625 + 4414688445456 = 3973325^2 + 2101116^2 .

It is a cyclic number.

It is not a de Polignac number, because 20202000001081 - 2⁵ = 20202000001049 is a prime.

It is a super-2 number, since 2×20202000001081² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20202000008081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10101000000540 + 10101000000541.

It is an arithmetic number, because the mean of its divisors is an integer number (10101000000541).

Almost surely, 2^{20202000001081} is an apocalyptic number.

It is an amenable number.

20202000001081 is a deficient number, since it is larger than the sum of its proper divisors (1).

20202000001081 is an equidigital number, since it uses as much as digits as its factorization.

20202000001081 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 20202000001081 its reverse (18010000020202), we get a palindrome (38212000021283).

The spelling of 20202000001081 in words is "twenty trillion, two hundred two billion, one thousand, eighty-one".