2021220193 has 2 divisors, whose sum is σ = 2021220194. Its totient is φ = 2021220192.

The previous prime is 2021220161. The next prime is 2021220211. The reversal of 2021220193 is 3910221202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1938464784 + 82755409 = 44028^2 + 9097^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021220193 - 2⁵ = 2021220161 is a prime.

It is not a weakly prime, because it can be changed into another prime (2021224193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010610096 + 1010610097.

It is an arithmetic number, because the mean of its divisors is an integer number (1010610097).

Almost surely, 2^2021220193 is an apocalyptic number.

It is an amenable number.

2021220193 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021220193 is an equidigital number, since it uses as much as digits as its factorization.

2021220193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 2021220193 is about 44957.9825281340. The cubic root of 2021220193 is about 1264.3613440507.

Adding to 2021220193 its reverse (3910221202), we get a palindrome (5931441395).

The spelling of 2021220193 in words is "two billion, twenty-one million, two hundred twenty thousand, one hundred ninety-three".