133303021041221 has 4 divisors (see below), whose sum is σ = 133305209375052. Its totient is φ = 133300832707392.

The previous prime is 133303021041143. The next prime is 133303021041241. The reversal of 133303021041221 is 122140120303331.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3657698325121 + 129645322716100 = 1912511^2 + 11386190^2 .

It is a cyclic number.

It is not a de Polignac number, because 133303021041221 - 2³⁴ = 133285841172037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133303021041241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1094075540 + ... + 1094197373.

It is an arithmetic number, because the mean of its divisors is an integer number (33326302343763).

Almost surely, 2^{133303021041221} is an apocalyptic number.

It is an amenable number.

133303021041221 is a deficient number, since it is larger than the sum of its proper divisors (2188333831).

133303021041221 is an equidigital number, since it uses as much as digits as its factorization.

133303021041221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2188333830.

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

Adding to 133303021041221 its reverse (122140120303331), we get a palindrome (255443141344552).

The spelling of 133303021041221 in words is "one hundred thirty-three trillion, three hundred three billion, twenty-one million, forty-one thousand, two hundred twenty-one".