33021213121331 has 4 divisors (see below), whose sum is σ = 33022831908000. Its totient is φ = 33019594334664.

The previous prime is 33021213121313. The next prime is 33021213121363. The reversal of 33021213121331 is 13312131212033.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33021213121331 is a prime.

It is a super-2 number, since 2×33021213121331² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 33021213121331.

It is not an unprimeable number, because it can be changed into a prime (33021213121031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 809362736 + ... + 809403533.

It is an arithmetic number, because the mean of its divisors is an integer number (8255707977000).

Almost surely, 2^{33021213121331} is an apocalyptic number.

33021213121331 is a deficient number, since it is larger than the sum of its proper divisors (1618786669).

33021213121331 is a wasteful number, since it uses less digits than its factorization.

33021213121331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1618786668.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 33021213121331 its reverse (13312131212033), we get a palindrome (46333344333364).

The spelling of 33021213121331 in words is "thirty-three trillion, twenty-one billion, two hundred thirteen million, one hundred twenty-one thousand, three hundred thirty-one".