33021012413 has 4 divisors (see below), whose sum is σ = 33043461888. Its totient is φ = 32998562940.

The previous prime is 33021012397. The next prime is 33021012461. The reversal of 33021012413 is 31421012033.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31421012033 = 43411 ⋅723803.

It is a cyclic number.

It is not a de Polignac number, because 33021012413 - 2⁴ = 33021012397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33021012113) 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 3 ways as a sum of consecutive naturals, for example, 11222531 + ... + 11225472.

It is an arithmetic number, because the mean of its divisors is an integer number (8260865472).

Almost surely, 2^33021012413 is an apocalyptic number.

It is an amenable number.

33021012413 is a deficient number, since it is larger than the sum of its proper divisors (22449475).

33021012413 is a wasteful number, since it uses less digits than its factorization.

33021012413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22449474.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 33021012413 its reverse (31421012033), we get a palindrome (64442024446).

The spelling of 33021012413 in words is "thirty-three billion, twenty-one million, twelve thousand, four hundred thirteen".