2121021201043 has 2 divisors, whose sum is σ = 2121021201044. Its totient is φ = 2121021201042.

The previous prime is 2121021200981. The next prime is 2121021201071. The reversal of 2121021201043 is 3401021201212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2121021201043 - 2²¹ = 2121019103891 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2121021201043.

It is not a weakly prime, because it can be changed into another prime (2121021201743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060510600521 + 1060510600522.

It is an arithmetic number, because the mean of its divisors is an integer number (1060510600522).

Almost surely, 2^{2121021201043} is an apocalyptic number.

2121021201043 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121021201043 is an equidigital number, since it uses as much as digits as its factorization.

2121021201043 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 2121021201043 its reverse (3401021201212), we get a palindrome (5522042402255).

The spelling of 2121021201043 in words is "two trillion, one hundred twenty-one billion, twenty-one million, two hundred one thousand, forty-three".