2121000222043 has 2 divisors, whose sum is σ = 2121000222044. Its totient is φ = 2121000222042.

The previous prime is 2121000221983. The next prime is 2121000222049. The reversal of 2121000222043 is 3402220001212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2121000222043 - 2¹³ = 2121000213851 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2121000222043.

It is not a weakly prime, because it can be changed into another prime (2121000222049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060500111021 + 1060500111022.

It is an arithmetic number, because the mean of its divisors is an integer number (1060500111022).

Almost surely, 2^{2121000222043} is an apocalyptic number.

2121000222043 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121000222043 is an equidigital number, since it uses as much as digits as its factorization.

2121000222043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 2121000222043 its reverse (3402220001212), we get a palindrome (5523220223255).

The spelling of 2121000222043 in words is "two trillion, one hundred twenty-one billion, two hundred twenty-two thousand, forty-three".