2121000221983 has 2 divisors, whose sum is σ = 2121000221984. Its totient is φ = 2121000221982.

The previous prime is 2121000221941. The next prime is 2121000222043. The reversal of 2121000221983 is 3891220001212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2121000221983 - 2⁹ = 2121000221471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121000224983) 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, 1060500110991 + 1060500110992.

It is an arithmetic number, because the mean of its divisors is an integer number (1060500110992).

Almost surely, 2^{2121000221983} is an apocalyptic number.

2121000221983 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121000221983 is an equidigital number, since it uses as much as digits as its factorization.

2121000221983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 31.

The spelling of 2121000221983 in words is "two trillion, one hundred twenty-one billion, two hundred twenty-one thousand, nine hundred eighty-three".