2121132213433 has 2 divisors, whose sum is σ = 2121132213434. Its totient is φ = 2121132213432.

The previous prime is 2121132213427. The next prime is 2121132213449. The reversal of 2121132213433 is 3343122311212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1977814697104 + 143317516329 = 1406348^2 + 378573^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2121132213433 is a prime.

It is not a weakly prime, because it can be changed into another prime (2121132217433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060566106716 + 1060566106717.

It is an arithmetic number, because the mean of its divisors is an integer number (1060566106717).

Almost surely, 2^{2121132213433} is an apocalyptic number.

It is an amenable number.

2121132213433 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121132213433 is an equidigital number, since it uses as much as digits as its factorization.

2121132213433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 28.

Adding to 2121132213433 its reverse (3343122311212), we get a palindrome (5464254524645).

The spelling of 2121132213433 in words is "two trillion, one hundred twenty-one billion, one hundred thirty-two million, two hundred thirteen thousand, four hundred thirty-three".