133103321202221 has 2 divisors, whose sum is σ = 133103321202222. Its totient is φ = 133103321202220.

The previous prime is 133103321202161. The next prime is 133103321202223. The reversal of 133103321202221 is 122202123301331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131793017452996 + 1310303749225 = 11480114^2 + 1144685^2 .

It is a cyclic number.

It is not a de Polignac number, because 133103321202221 - 2¹⁴ = 133103321185837 is a prime.

It is a super-2 number, since 2×133103321202221² (a number of 29 digits) contains 22 as substring.

Together with 133103321202223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133103321202223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66551660601110 + 66551660601111.

It is an arithmetic number, because the mean of its divisors is an integer number (66551660601111).

Almost surely, 2^{133103321202221} is an apocalyptic number.

It is an amenable number.

133103321202221 is a deficient number, since it is larger than the sum of its proper divisors (1).

133103321202221 is an equidigital number, since it uses as much as digits as its factorization.

133103321202221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 133103321202221 its reverse (122202123301331), we get a palindrome (255305444503552).

The spelling of 133103321202221 in words is "one hundred thirty-three trillion, one hundred three billion, three hundred twenty-one million, two hundred two thousand, two hundred twenty-one".