2021010769 has 2 divisors, whose sum is σ = 2021010770. Its totient is φ = 2021010768.

The previous prime is 2021010661. The next prime is 2021010773. The reversal of 2021010769 is 9670101202.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1773420544 + 247590225 = 42112^2 + 15735^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021010769 - 2¹⁷ = 2020879697 is a prime.

It is a super-2 number, since 2×2021010769² = 8168969056827942722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2021010799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010505384 + 1010505385.

It is an arithmetic number, because the mean of its divisors is an integer number (1010505385).

Almost surely, 2^2021010769 is an apocalyptic number.

It is an amenable number.

2021010769 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021010769 is an equidigital number, since it uses as much as digits as its factorization.

2021010769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 2021010769 is about 44955.6533597277. The cubic root of 2021010769 is about 1264.3176745952.

The spelling of 2021010769 in words is "two billion, twenty-one million, ten thousand, seven hundred sixty-nine".