2021695297 has 2 divisors, whose sum is σ = 2021695298. Its totient is φ = 2021695296.

The previous prime is 2021695283. The next prime is 2021695321. The reversal of 2021695297 is 7925961202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1833209856 + 188485441 = 42816^2 + 13729^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021695297 - 2¹¹ = 2021693249 is a prime.

It is not a weakly prime, because it can be changed into another prime (2021695397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010847648 + 1010847649.

It is an arithmetic number, because the mean of its divisors is an integer number (1010847649).

Almost surely, 2^2021695297 is an apocalyptic number.

It is an amenable number.

2021695297 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021695297 is an equidigital number, since it uses as much as digits as its factorization.

2021695297 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 2021695297 is about 44963.2660846607. The cubic root of 2021695297 is about 1264.4604023775.

The spelling of 2021695297 in words is "two billion, twenty-one million, six hundred ninety-five thousand, two hundred ninety-seven".