33121431224 has 24 divisors (see below), whose sum is σ = 72241898040. Its totient is φ = 14194898928.

The previous prime is 33121431223. The next prime is 33121431271. The reversal of 33121431224 is 42213412133.

It is a junction number, because it is equal to n+sod(n) for n = 33121431193 and 33121431202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33121431223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42246332 + ... + 42247115.

It is an arithmetic number, because the mean of its divisors is an integer number (3010079085).

Almost surely, 2^33121431224 is an apocalyptic number.

It is an amenable number.

33121431224 is an abundant number, since it is smaller than the sum of its proper divisors (39120466816).

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

33121431224 is a wasteful number, since it uses less digits than its factorization.

33121431224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84493467 (or 84493456 counting only the distinct ones).

The product of its digits is 3456, while the sum is 26.

Adding to 33121431224 its reverse (42213412133), we get a palindrome (75334843357).

The spelling of 33121431224 in words is "thirty-three billion, one hundred twenty-one million, four hundred thirty-one thousand, two hundred twenty-four".