133321213331320 has 128 divisors (see below), whose sum is σ = 355998377427840. Its totient is φ = 43984354959360.

The previous prime is 133321213331287. The next prime is 133321213331359. The reversal of 133321213331320 is 23133312123331.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78705427 + ... + 80381506.

It is an arithmetic number, because the mean of its divisors is an integer number (2781237323655).

Almost surely, 2^{133321213331320} is an apocalyptic number.

133321213331320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133321213331320 is an abundant number, since it is smaller than the sum of its proper divisors (222677164096520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133321213331320 is a wasteful number, since it uses less digits than its factorization.

133321213331320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159087065 (or 159087061 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 31.

Adding to 133321213331320 its reverse (23133312123331), we get a palindrome (156454525454651).

The spelling of 133321213331320 in words is "one hundred thirty-three trillion, three hundred twenty-one billion, two hundred thirteen million, three hundred thirty-one thousand, three hundred twenty".