133320213121 has 2 divisors, whose sum is σ = 133320213122. Its totient is φ = 133320213120.

The previous prime is 133320213067. The next prime is 133320213133. The reversal of 133320213121 is 121312023331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68715282496 + 64604930625 = 262136^2 + 254175^2 .

It is a cyclic number.

It is not a de Polignac number, because 133320213121 - 2²¹ = 133318115969 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133320213092 and 133320213101.

It is not a weakly prime, because it can be changed into another prime (133320223121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66660106560 + 66660106561.

It is an arithmetic number, because the mean of its divisors is an integer number (66660106561).

Almost surely, 2^133320213121 is an apocalyptic number.

It is an amenable number.

133320213121 is a deficient number, since it is larger than the sum of its proper divisors (1).

133320213121 is an equidigital number, since it uses as much as digits as its factorization.

133320213121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 133320213121 its reverse (121312023331), we get a palindrome (254632236452).

The spelling of 133320213121 in words is "one hundred thirty-three billion, three hundred twenty million, two hundred thirteen thousand, one hundred twenty-one".