133123233220 has 48 divisors (see below), whose sum is σ = 280165451328. Its totient is φ = 53133874560.

The previous prime is 133123233209. The next prime is 133123233223. The reversal of 133123233220 is 22332321331.

It is not an unprimeable number, because it can be changed into a prime (133123233223) 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, 20807062 + ... + 20813458.

It is an arithmetic number, because the mean of its divisors is an integer number (5836780236).

Almost surely, 2^133123233220 is an apocalyptic number.

133123233220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133123233220 is an abundant number, since it is smaller than the sum of its proper divisors (147042218108).

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

133123233220 is a wasteful number, since it uses less digits than its factorization.

133123233220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8500 (or 8498 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 133123233220 its reverse (22332321331), we get a palindrome (155455554551).

The spelling of 133123233220 in words is "one hundred thirty-three billion, one hundred twenty-three million, two hundred thirty-three thousand, two hundred twenty".