10212121110043 has 2 divisors, whose sum is σ = 10212121110044. Its totient is φ = 10212121110042.

The previous prime is 10212121109977. The next prime is 10212121110049. The reversal of 10212121110043 is 34001112121201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10212121110043 - 2²¹ = 10212119012891 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10212121110043.

It is not a weakly prime, because it can be changed into another prime (10212121110049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5106060555021 + 5106060555022.

It is an arithmetic number, because the mean of its divisors is an integer number (5106060555022).

Almost surely, 2^{10212121110043} is an apocalyptic number.

10212121110043 is a deficient number, since it is larger than the sum of its proper divisors (1).

10212121110043 is an equidigital number, since it uses as much as digits as its factorization.

10212121110043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 10212121110043 its reverse (34001112121201), we get a palindrome (44213233231244).

The spelling of 10212121110043 in words is "ten trillion, two hundred twelve billion, one hundred twenty-one million, one hundred ten thousand, forty-three".