20000121303133 has 2 divisors, whose sum is σ = 20000121303134. Its totient is φ = 20000121303132.

The previous prime is 20000121303131. The next prime is 20000121303181. The reversal of 20000121303133 is 33130312100002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19896934517604 + 103186785529 = 4460598^2 + 321227^2 .

It is a cyclic number.

It is not a de Polignac number, because 20000121303133 - 2¹ = 20000121303131 is a prime.

Together with 20000121303131, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20000121303133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20000121303131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000060651566 + 10000060651567.

It is an arithmetic number, because the mean of its divisors is an integer number (10000060651567).

Almost surely, 2^{20000121303133} is an apocalyptic number.

It is an amenable number.

20000121303133 is a deficient number, since it is larger than the sum of its proper divisors (1).

20000121303133 is an equidigital number, since it uses as much as digits as its factorization.

20000121303133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 20000121303133 its reverse (33130312100002), we get a palindrome (53130433403135).

The spelling of 20000121303133 in words is "twenty trillion, one hundred twenty-one million, three hundred three thousand, one hundred thirty-three".