20211422243 has 2 divisors, whose sum is σ = 20211422244. Its totient is φ = 20211422242.

The previous prime is 20211422183. The next prime is 20211422321. The reversal of 20211422243 is 34222411202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20211422243 - 2²⁴ = 20194645027 is a prime.

It is not a weakly prime, because it can be changed into another prime (20211422743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105711121 + 10105711122.

It is an arithmetic number, because the mean of its divisors is an integer number (10105711122).

Almost surely, 2^20211422243 is an apocalyptic number.

20211422243 is a deficient number, since it is larger than the sum of its proper divisors (1).

20211422243 is an equidigital number, since it uses as much as digits as its factorization.

20211422243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 20211422243 its reverse (34222411202), we get a palindrome (54433833445).

The spelling of 20211422243 in words is "twenty billion, two hundred eleven million, four hundred twenty-two thousand, two hundred forty-three".