20212006543 has 2 divisors, whose sum is σ = 20212006544. Its totient is φ = 20212006542.

The previous prime is 20212006517. The next prime is 20212006553. The reversal of 20212006543 is 34560021202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20212006543 - 2¹⁷ = 20211875471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20212006553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106003271 + 10106003272.

It is an arithmetic number, because the mean of its divisors is an integer number (10106003272).

Almost surely, 2^20212006543 is an apocalyptic number.

20212006543 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212006543 is an equidigital number, since it uses as much as digits as its factorization.

20212006543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 20212006543 its reverse (34560021202), we get a palindrome (54772027745).

The spelling of 20212006543 in words is "twenty billion, two hundred twelve million, six thousand, five hundred forty-three".