133323120231220 has 24 divisors (see below), whose sum is σ = 280297798306344. Its totient is φ = 53268439364736.

The previous prime is 133323120231209. The next prime is 133323120231227. The reversal of 133323120231220 is 22132021323331.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 21603420610704 + 111719699620516 = 4647948^2 + 10569754^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133323120231227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3800527507 + ... + 3800562586.

It is an arithmetic number, because the mean of its divisors is an integer number (11679074929431).

Almost surely, 2^{133323120231220} is an apocalyptic number.

133323120231220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133323120231220 is an abundant number, since it is smaller than the sum of its proper divisors (146974678075124).

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

133323120231220 is a wasteful number, since it uses less digits than its factorization.

133323120231220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7601090979 (or 7601090977 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 133323120231220 its reverse (22132021323331), we get a palindrome (155455141554551).

The spelling of 133323120231220 in words is "one hundred thirty-three trillion, three hundred twenty-three billion, one hundred twenty million, two hundred thirty-one thousand, two hundred twenty".