20211043123207 has 2 divisors, whose sum is σ = 20211043123208. Its totient is φ = 20211043123206.

The previous prime is 20211043123189. The next prime is 20211043123277. The reversal of 20211043123207 is 70232134011202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20211043123207 - 2³⁵ = 20176683384839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20211043123277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105521561603 + 10105521561604.

It is an arithmetic number, because the mean of its divisors is an integer number (10105521561604).

Almost surely, 2^{20211043123207} is an apocalyptic number.

20211043123207 is a deficient number, since it is larger than the sum of its proper divisors (1).

20211043123207 is an equidigital number, since it uses as much as digits as its factorization.

20211043123207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

Adding to 20211043123207 its reverse (70232134011202), we get a palindrome (90443177134409).

The spelling of 20211043123207 in words is "twenty trillion, two hundred eleven billion, forty-three million, one hundred twenty-three thousand, two hundred seven".