133320021303 has 16 divisors (see below), whose sum is σ = 208644976640. Its totient is φ = 74123872416.

The previous prime is 133320021293. The next prime is 133320021347. The reversal of 133320021303 is 303120023331.

It is not a de Polignac number, because 133320021303 - 2⁴ = 133320021287 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133320021303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133320021403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85790743 + ... + 85792296.

It is an arithmetic number, because the mean of its divisors is an integer number (13040311040).

Almost surely, 2^133320021303 is an apocalyptic number.

133320021303 is a deficient number, since it is larger than the sum of its proper divisors (75324955337).

133320021303 is a wasteful number, since it uses less digits than its factorization.

133320021303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171583086.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 133320021303 its reverse (303120023331), we get a palindrome (436440044634).

The spelling of 133320021303 in words is "one hundred thirty-three billion, three hundred twenty million, twenty-one thousand, three hundred three".