33440121443 has 4 divisors (see below), whose sum is σ = 33441714960. Its totient is φ = 33438527928.

The previous prime is 33440121433. The next prime is 33440121487. The reversal of 33440121443 is 34412104433.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 33440121443 - 2⁴ = 33440121427 is a prime.

It is a super-2 number, since 2×33440121443² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33440121413) 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, 764855 + ... + 807392.

It is an arithmetic number, because the mean of its divisors is an integer number (8360428740).

Almost surely, 2^33440121443 is an apocalyptic number.

33440121443 is a deficient number, since it is larger than the sum of its proper divisors (1593517).

33440121443 is a wasteful number, since it uses less digits than its factorization.

33440121443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1593516.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 33440121443 its reverse (34412104433), we get a palindrome (67852225876).

The spelling of 33440121443 in words is "thirty-three billion, four hundred forty million, one hundred twenty-one thousand, four hundred forty-three".