2021852971 has 2 divisors, whose sum is σ = 2021852972. Its totient is φ = 2021852970.

The previous prime is 2021852969. The next prime is 2021852983. The reversal of 2021852971 is 1792581202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2021852971 - 2¹ = 2021852969 is a prime.

Together with 2021852969, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2021852971.

It is not a weakly prime, because it can be changed into another prime (2021852951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010926485 + 1010926486.

It is an arithmetic number, because the mean of its divisors is an integer number (1010926486).

Almost surely, 2^2021852971 is an apocalyptic number.

2021852971 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021852971 is an equidigital number, since it uses as much as digits as its factorization.

2021852971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 2021852971 is about 44965.0194150964. The cubic root of 2021852971 is about 1264.4932736922.

The spelling of 2021852971 in words is "two billion, twenty-one million, eight hundred fifty-two thousand, nine hundred seventy-one".