101212221043 has 2 divisors, whose sum is σ = 101212221044. Its totient is φ = 101212221042.

The previous prime is 101212220939. The next prime is 101212221053. The reversal of 101212221043 is 340122212101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101212221043 - 2⁹ = 101212220531 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101212221043.

It is not a weakly prime, because it can be changed into another prime (101212221053) 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, 50606110521 + 50606110522.

It is an arithmetic number, because the mean of its divisors is an integer number (50606110522).

Almost surely, 2^101212221043 is an apocalyptic number.

101212221043 is a deficient number, since it is larger than the sum of its proper divisors (1).

101212221043 is an equidigital number, since it uses as much as digits as its factorization.

101212221043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 101212221043 its reverse (340122212101), we get a palindrome (441334433144).

The spelling of 101212221043 in words is "one hundred one billion, two hundred twelve million, two hundred twenty-one thousand, forty-three".