33121404424 has 16 divisors (see below), whose sum is σ = 63155221200. Its totient is φ = 16280012112.

The previous prime is 33121404413. The next prime is 33121404457. The reversal of 33121404424 is 42440412133.

It is a junction number, because it is equal to n+sod(n) for n = 33121404392 and 33121404401.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35085762 + ... + 35086705.

It is an arithmetic number, because the mean of its divisors is an integer number (3947201325).

Almost surely, 2^33121404424 is an apocalyptic number.

It is an amenable number.

33121404424 is a deficient number, since it is larger than the sum of its proper divisors (30033816776).

33121404424 is a wasteful number, since it uses less digits than its factorization.

33121404424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70172532 (or 70172528 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 33121404424 its reverse (42440412133), we get a palindrome (75561816557).

The spelling of 33121404424 in words is "thirty-three billion, one hundred twenty-one million, four hundred four thousand, four hundred twenty-four".