2020411621 has 2 divisors, whose sum is σ = 2020411622. Its totient is φ = 2020411620.

The previous prime is 2020411537. The next prime is 2020411663. The reversal of 2020411621 is 1261140202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1184392225 + 836019396 = 34415^2 + 28914^2 .

It is a cyclic number.

It is not a de Polignac number, because 2020411621 - 2¹⁹ = 2019887333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2020414621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010205810 + 1010205811.

It is an arithmetic number, because the mean of its divisors is an integer number (1010205811).

Almost surely, 2^2020411621 is an apocalyptic number.

It is an amenable number.

2020411621 is a deficient number, since it is larger than the sum of its proper divisors (1).

2020411621 is an equidigital number, since it uses as much as digits as its factorization.

2020411621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 2020411621 is about 44948.9890987550. The cubic root of 2020411621 is about 1264.1927225518.

Adding to 2020411621 its reverse (1261140202), we get a palindrome (3281551823).

The spelling of 2020411621 in words is "two billion, twenty million, four hundred eleven thousand, six hundred twenty-one".