33231112420 has 24 divisors (see below), whose sum is σ = 76129458048. Its totient is φ = 12084040800.

The previous prime is 33231112403. The next prime is 33231112429. The reversal of 33231112420 is 2421113233.

It is a super-2 number, since 2×33231112420² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 33231112391 and 33231112400.

It is not an unprimeable number, because it can be changed into a prime (33231112429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75525036 + ... + 75525475.

It is an arithmetic number, because the mean of its divisors is an integer number (3172060752).

Almost surely, 2^33231112420 is an apocalyptic number.

It is an amenable number.

33231112420 is an abundant number, since it is smaller than the sum of its proper divisors (42898345628).

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

33231112420 is a wasteful number, since it uses less digits than its factorization.

33231112420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151050531 (or 151050529 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 33231112420 its reverse (2421113233), we get a palindrome (35652225653).

The spelling of 33231112420 in words is "thirty-three billion, two hundred thirty-one million, one hundred twelve thousand, four hundred twenty".