20202000281 has 2 divisors, whose sum is σ = 20202000282. Its totient is φ = 20202000280.

The previous prime is 20202000257. The next prime is 20202000283. The reversal of 20202000281 is 18200020202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12317448256 + 7884552025 = 110984^2 + 88795^2 .

It is a cyclic number.

It is not a de Polignac number, because 20202000281 - 2³⁴ = 3022131097 is a prime.

It is a super-2 number, since 2×20202000281² (a number of 21 digits) contains 22 as substring.

Together with 20202000283, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20202000283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10101000140 + 10101000141.

It is an arithmetic number, because the mean of its divisors is an integer number (10101000141).

Almost surely, 2^20202000281 is an apocalyptic number.

It is an amenable number.

20202000281 is a deficient number, since it is larger than the sum of its proper divisors (1).

20202000281 is an equidigital number, since it uses as much as digits as its factorization.

20202000281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20202000281 its reverse (18200020202), we get a palindrome (38402020483).

The spelling of 20202000281 in words is "twenty billion, two hundred two million, two hundred eighty-one", and thus it is an aban number.