133220213312 has 28 divisors (see below), whose sum is σ = 279909384300. Its totient is φ = 62691864576.

The previous prime is 133220213309. The next prime is 133220213323. The reversal of 133220213312 is 213312022331.

It can be written as a sum of positive squares in 2 ways, for example, as 67466945536 + 65753267776 = 259744^2 + 256424^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61221437 + ... + 61223612.

It is an arithmetic number, because the mean of its divisors is an integer number (9996763725).

Almost surely, 2^133220213312 is an apocalyptic number.

It is an amenable number.

133220213312 is an abundant number, since it is smaller than the sum of its proper divisors (146689170988).

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

133220213312 is a wasteful number, since it uses less digits than its factorization.

133220213312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122445078 (or 122445068 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 133220213312 its reverse (213312022331), we get a palindrome (346532235643).

The spelling of 133220213312 in words is "one hundred thirty-three billion, two hundred twenty million, two hundred thirteen thousand, three hundred twelve".