2012121100043 has 2 divisors, whose sum is σ = 2012121100044. Its totient is φ = 2012121100042.

The previous prime is 2012121100027. The next prime is 2012121100147. The reversal of 2012121100043 is 3400011212102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2012121100043 - 2⁴ = 2012121100027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2012121099994 and 2012121100030.

It is not a weakly prime, because it can be changed into another prime (2012121100243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006060550021 + 1006060550022.

It is an arithmetic number, because the mean of its divisors is an integer number (1006060550022).

Almost surely, 2^{2012121100043} is an apocalyptic number.

2012121100043 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012121100043 is an equidigital number, since it uses as much as digits as its factorization.

2012121100043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 2012121100043 its reverse (3400011212102), we get a palindrome (5412132312145).

The spelling of 2012121100043 in words is "two trillion, twelve billion, one hundred twenty-one million, one hundred thousand, forty-three".