20211567043 has 2 divisors, whose sum is σ = 20211567044. Its totient is φ = 20211567042.

The previous prime is 20211567041. The next prime is 20211567071. The reversal of 20211567043 is 34076511202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20211567043 - 2¹ = 20211567041 is a prime.

Together with 20211567041, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 20211566996 and 20211567014.

It is not a weakly prime, because it can be changed into another prime (20211567041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105783521 + 10105783522.

It is an arithmetic number, because the mean of its divisors is an integer number (10105783522).

Almost surely, 2^20211567043 is an apocalyptic number.

20211567043 is a deficient number, since it is larger than the sum of its proper divisors (1).

20211567043 is an equidigital number, since it uses as much as digits as its factorization.

20211567043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 31.

The spelling of 20211567043 in words is "twenty billion, two hundred eleven million, five hundred sixty-seven thousand, forty-three".