33121424020 has 24 divisors (see below), whose sum is σ = 73646461224. Its totient is φ = 12469241856.

The previous prime is 33121424009. The next prime is 33121424053. The reversal of 33121424020 is 2042412133.

It can be written as a sum of positive squares in 4 ways, for example, as 4205781904 + 28915642116 = 64852^2 + 170046^2 .

It is a super-2 number, since 2×33121424020² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33121423982 and 33121424000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48707637 + ... + 48708316.

It is an arithmetic number, because the mean of its divisors is an integer number (3068602551).

Almost surely, 2^33121424020 is an apocalyptic number.

It is an amenable number.

33121424020 is an abundant number, since it is smaller than the sum of its proper divisors (40525037204).

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

33121424020 is a wasteful number, since it uses less digits than its factorization.

33121424020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97415979 (or 97415977 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 33121424020 its reverse (2042412133), we get a palindrome (35163836153).

The spelling of 33121424020 in words is "thirty-three billion, one hundred twenty-one million, four hundred twenty-four thousand, twenty".