20221211012243 has 2 divisors, whose sum is σ = 20221211012244. Its totient is φ = 20221211012242.

The previous prime is 20221211012221. The next prime is 20221211012273. The reversal of 20221211012243 is 34221011212202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20221211012243 - 2²⁰ = 20221209963667 is a prime.

It is not a weakly prime, because it can be changed into another prime (20221211012273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110605506121 + 10110605506122.

It is an arithmetic number, because the mean of its divisors is an integer number (10110605506122).

Almost surely, 2^{20221211012243} is an apocalyptic number.

20221211012243 is a deficient number, since it is larger than the sum of its proper divisors (1).

20221211012243 is an equidigital number, since it uses as much as digits as its factorization.

20221211012243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 20221211012243 its reverse (34221011212202), we get a palindrome (54442222224445).

The spelling of 20221211012243 in words is "twenty trillion, two hundred twenty-one billion, two hundred eleven million, twelve thousand, two hundred forty-three".