210001121200043 has 2 divisors, whose sum is σ = 210001121200044. Its totient is φ = 210001121200042.

The previous prime is 210001121200009. The next prime is 210001121200103. The reversal of 210001121200043 is 340002121100012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 210001121200043 - 2²² = 210001117005739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210001121199994 and 210001121200030.

It is not a weakly prime, because it can be changed into another prime (210001121200643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105000560600021 + 105000560600022.

It is an arithmetic number, because the mean of its divisors is an integer number (105000560600022).

Almost surely, 2^{210001121200043} is an apocalyptic number.

210001121200043 is a deficient number, since it is larger than the sum of its proper divisors (1).

210001121200043 is an equidigital number, since it uses as much as digits as its factorization.

210001121200043 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 17.

Adding to 210001121200043 its reverse (340002121100012), we get a palindrome (550003242300055).

The spelling of 210001121200043 in words is "two hundred ten trillion, one billion, one hundred twenty-one million, two hundred thousand, forty-three".