2121022021033 has 2 divisors, whose sum is σ = 2121022021034. Its totient is φ = 2121022021032.

The previous prime is 2121022021007. The next prime is 2121022021087. The reversal of 2121022021033 is 3301202201212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1643695792489 + 477326228544 = 1282067^2 + 690888^2 .

It is a cyclic number.

It is not a de Polignac number, because 2121022021033 - 2²¹ = 2121019923881 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2121022021033.

It is not a weakly prime, because it can be changed into another prime (2121022021003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060511010516 + 1060511010517.

It is an arithmetic number, because the mean of its divisors is an integer number (1060511010517).

Almost surely, 2^{2121022021033} is an apocalyptic number.

It is an amenable number.

2121022021033 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121022021033 is an equidigital number, since it uses as much as digits as its factorization.

2121022021033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 2121022021033 its reverse (3301202201212), we get a palindrome (5422224222245).

The spelling of 2121022021033 in words is "two trillion, one hundred twenty-one billion, twenty-two million, twenty-one thousand, thirty-three".