133321223220 has 96 divisors (see below), whose sum is σ = 387338972160. Its totient is φ = 34227118080.

The previous prime is 133321223171. The next prime is 133321223267. The reversal of 133321223220 is 22322123331.

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, 173286 + ... + 544674.

It is an arithmetic number, because the mean of its divisors is an integer number (4034780960).

Almost surely, 2^133321223220 is an apocalyptic number.

133321223220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133321223220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193669486080).

133321223220 is an abundant number, since it is smaller than the sum of its proper divisors (254017748940).

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

133321223220 is a wasteful number, since it uses less digits than its factorization.

133321223220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371625 (or 371623 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 133321223220 its reverse (22322123331), we get a palindrome (155643346551).

The spelling of 133321223220 in words is "one hundred thirty-three billion, three hundred twenty-one million, two hundred twenty-three thousand, two hundred twenty".