102212543 has 2 divisors, whose sum is σ = 102212544. Its totient is φ = 102212542.

The previous prime is 102212531. The next prime is 102212557. The reversal of 102212543 is 345212201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102212543 - 2⁴ = 102212527 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102212563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51106271 + 51106272.

It is an arithmetic number, because the mean of its divisors is an integer number (51106272).

Almost surely, 2^102212543 is an apocalyptic number.

102212543 is a deficient number, since it is larger than the sum of its proper divisors (1).

102212543 is an equidigital number, since it uses as much as digits as its factorization.

102212543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 102212543 is about 10110.0219089773. The cubic root of 102212543 is about 467.5571806101.

Adding to 102212543 its reverse (345212201), we get a palindrome (447424744).

The spelling of 102212543 in words is "one hundred two million, two hundred twelve thousand, five hundred forty-three".