21331001440033 has 8 divisors (see below), whose sum is σ = 21885588874688. Its totient is φ = 20779073897904.

The previous prime is 21331001440031. The next prime is 21331001440039. The reversal of 21331001440033 is 33004410013312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21331001440033 - 2¹ = 21331001440031 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21331001440031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 664956885 + ... + 664988962.

It is an arithmetic number, because the mean of its divisors is an integer number (2735698609336).

Almost surely, 2^{21331001440033} is an apocalyptic number.

It is an amenable number.

21331001440033 is a deficient number, since it is larger than the sum of its proper divisors (554587434655).

21331001440033 is a wasteful number, since it uses less digits than its factorization.

21331001440033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1329946263.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 21331001440033 its reverse (33004410013312), we get a palindrome (54335411453345).

The spelling of 21331001440033 in words is "twenty-one trillion, three hundred thirty-one billion, one million, four hundred forty thousand, thirty-three".