20211313121333 has 2 divisors, whose sum is σ = 20211313121334. Its totient is φ = 20211313121332.

The previous prime is 20211313121327. The next prime is 20211313121347. The reversal of 20211313121333 is 33312131311202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12852067260484 + 7359245860849 = 3584978^2 + 2712793^2 .

It is a cyclic number.

It is not a de Polignac number, because 20211313121333 - 2⁴ = 20211313121317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20211313121033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105656560666 + 10105656560667.

It is an arithmetic number, because the mean of its divisors is an integer number (10105656560667).

Almost surely, 2^{20211313121333} is an apocalyptic number.

It is an amenable number.

20211313121333 is a deficient number, since it is larger than the sum of its proper divisors (1).

20211313121333 is an equidigital number, since it uses as much as digits as its factorization.

20211313121333 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 20211313121333 its reverse (33312131311202), we get a palindrome (53523444432535).

The spelling of 20211313121333 in words is "twenty trillion, two hundred eleven billion, three hundred thirteen million, one hundred twenty-one thousand, three hundred thirty-three".