133020221320 has 64 divisors (see below), whose sum is σ = 360054748800. Its totient is φ = 43206566400.

The previous prime is 133020221303. The next prime is 133020221353. The reversal of 133020221320 is 23122020331.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12496581 + ... + 12507220.

It is an arithmetic number, because the mean of its divisors is an integer number (5625855450).

Almost surely, 2^133020221320 is an apocalyptic number.

133020221320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133020221320 is an abundant number, since it is smaller than the sum of its proper divisors (227034527480).

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

133020221320 is a wasteful number, since it uses less digits than its factorization.

133020221320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25003838 (or 25003834 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 133020221320 its reverse (23122020331), we get a palindrome (156142241651).

The spelling of 133020221320 in words is "one hundred thirty-three billion, twenty million, two hundred twenty-one thousand, three hundred twenty".