2020021151021 has 2 divisors, whose sum is σ = 2020021151022. Its totient is φ = 2020021151020.

The previous prime is 2020021151009. The next prime is 2020021151033. The reversal of 2020021151021 is 1201511200202.

It is a balanced prime because it is at equal distance from previous prime (2020021151009) and next prime (2020021151033).

It can be written as a sum of positive squares in only one way, i.e., 1761621762121 + 258399388900 = 1327261^2 + 508330^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2020021151021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2020021151051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010010575510 + 1010010575511.

It is an arithmetic number, because the mean of its divisors is an integer number (1010010575511).

Almost surely, 2^{2020021151021} is an apocalyptic number.

It is an amenable number.

2020021151021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2020021151021 is an equidigital number, since it uses as much as digits as its factorization.

2020021151021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 2020021151021 its reverse (1201511200202), we get a palindrome (3221532351223).

The spelling of 2020021151021 in words is "two trillion, twenty billion, twenty-one million, one hundred fifty-one thousand, twenty-one".