2021043035161 has 2 divisors, whose sum is σ = 2021043035162. Its totient is φ = 2021043035160.

The previous prime is 2021043035071. The next prime is 2021043035287. The reversal of 2021043035161 is 1615303401202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1193925543561 + 827117491600 = 1092669^2 + 909460^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2021043035161 is a prime.

It is a super-3 number, since 3×2021043035161³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (2021041035161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010521517580 + 1010521517581.

It is an arithmetic number, because the mean of its divisors is an integer number (1010521517581).

Almost surely, 2^{2021043035161} is an apocalyptic number.

It is an amenable number.

2021043035161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021043035161 is an equidigital number, since it uses as much as digits as its factorization.

2021043035161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 2021043035161 its reverse (1615303401202), we get a palindrome (3636346436363).

The spelling of 2021043035161 in words is "two trillion, twenty-one billion, forty-three million, thirty-five thousand, one hundred sixty-one".