2021141989 has 2 divisors, whose sum is σ = 2021141990. Its totient is φ = 2021141988.

The previous prime is 2021141981. The next prime is 2021142031. The reversal of 2021141989 is 9891411202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1087350625 + 933791364 = 32975^2 + 30558^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021141989 - 2³ = 2021141981 is a prime.

It is a super-2 number, since 2×2021141989² = 8170029879397752242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2021141981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010570994 + 1010570995.

It is an arithmetic number, because the mean of its divisors is an integer number (1010570995).

Almost surely, 2^2021141989 is an apocalyptic number.

It is an amenable number.

2021141989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021141989 is an equidigital number, since it uses as much as digits as its factorization.

2021141989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 37.

The square root of 2021141989 is about 44957.1127742875. The cubic root of 2021141989 is about 1264.3450371700.

The spelling of 2021141989 in words is "two billion, twenty-one million, one hundred forty-one thousand, nine hundred eighty-nine".