2021700771 has 48 divisors (see below), whose sum is σ = 3064089600. Its totient is φ = 1283458176.

The previous prime is 2021700731. The next prime is 2021700773. The reversal of 2021700771 is 1770071202.

It is not a de Polignac number, because 2021700771 - 2⁹ = 2021700259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2021700773) 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 in 47 ways as a sum of consecutive naturals, for example, 2720626 + ... + 2721368.

It is an arithmetic number, because the mean of its divisors is an integer number (63835200).

Almost surely, 2^2021700771 is an apocalyptic number.

2021700771 is a deficient number, since it is larger than the sum of its proper divisors (1042388829).

2021700771 is a wasteful number, since it uses less digits than its factorization.

2021700771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960 (or 957 counting only the distinct ones).

The product of its (nonzero) digits is 1372, while the sum is 27.

The square root of 2021700771 is about 44963.3269565320. The cubic root of 2021700771 is about 1264.4615436062.

Adding to 2021700771 its reverse (1770071202), we get a palindrome (3791771973).

The spelling of 2021700771 in words is "two billion, twenty-one million, seven hundred thousand, seven hundred seventy-one".