133036232306221 has 4 divisors (see below), whose sum is σ = 133367993484444. Its totient is φ = 132704471128000.

The previous prime is 133036232306203. The next prime is 133036232306287. The reversal of 133036232306221 is 122603232630331.

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 130832533622025 + 2203698684196 = 11438205^2 + 1484486^2 .

It is a cyclic number.

It is not a de Polignac number, because 133036232306221 - 2¹³ = 133036232298029 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 (133036232306321) 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, 165880588510 + ... + 165880589311.

It is an arithmetic number, because the mean of its divisors is an integer number (33341998371111).

Almost surely, 2^{133036232306221} is an apocalyptic number.

It is an amenable number.

133036232306221 is a deficient number, since it is larger than the sum of its proper divisors (331761178223).

133036232306221 is an equidigital number, since it uses as much as digits as its factorization.

133036232306221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331761178222.

The product of its (nonzero) digits is 139968, while the sum is 37.

Adding to 133036232306221 its reverse (122603232630331), we get a palindrome (255639464936552).

The spelling of 133036232306221 in words is "one hundred thirty-three trillion, thirty-six billion, two hundred thirty-two million, three hundred six thousand, two hundred twenty-one".