133601126215321 has 4 divisors (see below), whose sum is σ = 140632764437200. Its totient is φ = 126569487993444.

The previous prime is 133601126215313. The next prime is 133601126215399. The reversal of 133601126215321 is 123512621106331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 133601126215321 - 2³ = 133601126215313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133601126215301) 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, 3515819110911 + ... + 3515819110948.

It is an arithmetic number, because the mean of its divisors is an integer number (35158191109300).

Almost surely, 2^{133601126215321} is an apocalyptic number.

It is an amenable number.

133601126215321 is a deficient number, since it is larger than the sum of its proper divisors (7031638221879).

133601126215321 is an equidigital number, since it uses as much as digits as its factorization.

133601126215321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7031638221878.

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 133601126215321 in words is "one hundred thirty-three trillion, six hundred one billion, one hundred twenty-six million, two hundred fifteen thousand, three hundred twenty-one".