133221111320 has 96 divisors (see below), whose sum is σ = 348855595200. Its totient is φ = 45594362880.

The previous prime is 133221111319. The next prime is 133221111391. The reversal of 133221111320 is 23111122331.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 133221111292 and 133221111301.

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, 727280 + ... + 891839.

It is an arithmetic number, because the mean of its divisors is an integer number (3633912450).

Almost surely, 2^133221111320 is an apocalyptic number.

133221111320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133221111320 is an abundant number, since it is smaller than the sum of its proper divisors (215634483880).

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

133221111320 is a wasteful number, since it uses less digits than its factorization.

133221111320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1619169 (or 1619154 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 133221111320 its reverse (23111122331), we get a palindrome (156332233651).

The spelling of 133221111320 in words is "one hundred thirty-three billion, two hundred twenty-one million, one hundred eleven thousand, three hundred twenty".