33213131120 has 80 divisors (see below), whose sum is σ = 83427076992. Its totient is φ = 12224010240.

The previous prime is 33213131113. The next prime is 33213131143. The reversal of 33213131120 is 2113131233.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×33213131120² (a number of 22 digits) contains 22 as substring.

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 = 33213131092 and 33213131101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 274505 + ... + 376535.

Almost surely, 2^33213131120 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33213131120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41713538496).

33213131120 is an abundant number, since it is smaller than the sum of its proper divisors (50213945872).

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

33213131120 is a wasteful number, since it uses less digits than its factorization.

33213131120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102370 (or 102364 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 33213131120 its reverse (2113131233), we get a palindrome (35326262353).

The spelling of 33213131120 in words is "thirty-three billion, two hundred thirteen million, one hundred thirty-one thousand, one hundred twenty".