133321321320220 has 72 divisors (see below), whose sum is σ = 311956496882352. Its totient is φ = 47816364245760.

The previous prime is 133321321320203. The next prime is 133321321320263. The reversal of 133321321320220 is 22023123123331.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 377162074 + ... + 377515393.

It is an arithmetic number, because the mean of its divisors is an integer number (4332729123366).

Almost surely, 2^{133321321320220} is an apocalyptic number.

133321321320220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133321321320220 is an abundant number, since it is smaller than the sum of its proper divisors (178635175562132).

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

133321321320220 is a wasteful number, since it uses less digits than its factorization.

133321321320220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754677571 (or 754677558 counting only the distinct ones).

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

Adding to 133321321320220 its reverse (22023123123331), we get a palindrome (155344444443551).

The spelling of 133321321320220 in words is "one hundred thirty-three trillion, three hundred twenty-one billion, three hundred twenty-one million, three hundred twenty thousand, two hundred twenty".