2150204542021 has 2 divisors, whose sum is σ = 2150204542022. Its totient is φ = 2150204542020.

The previous prime is 2150204542019. The next prime is 2150204542037. The reversal of 2150204542021 is 1202454020512.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2065357008225 + 84847533796 = 1437135^2 + 291286^2 .

It is a cyclic number.

It is not a de Polignac number, because 2150204542021 - 2¹ = 2150204542019 is a prime.

Together with 2150204542019, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2150204542081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1075102271010 + 1075102271011.

It is an arithmetic number, because the mean of its divisors is an integer number (1075102271011).

Almost surely, 2^{2150204542021} is an apocalyptic number.

It is an amenable number.

2150204542021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2150204542021 is an equidigital number, since it uses as much as digits as its factorization.

2150204542021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 2150204542021 its reverse (1202454020512), we get a palindrome (3352658562533).

The spelling of 2150204542021 in words is "two trillion, one hundred fifty billion, two hundred four million, five hundred forty-two thousand, twenty-one".