21333165041 has 8 divisors (see below), whose sum is σ = 21450804480. Its totient is φ = 21215831152.

The previous prime is 21333165011. The next prime is 21333165067. The reversal of 21333165041 is 14056133312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21333165041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21333164995 and 21333165013.

It is not an unprimeable number, because it can be changed into a prime (21333165011) 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, 64346 + ... + 216348.

It is an arithmetic number, because the mean of its divisors is an integer number (2681350560).

Almost surely, 2^21333165041 is an apocalyptic number.

It is an amenable number.

21333165041 is a deficient number, since it is larger than the sum of its proper divisors (117639439).

21333165041 is a wasteful number, since it uses less digits than its factorization.

21333165041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152775.

The product of its (nonzero) digits is 6480, while the sum is 29.

Adding to 21333165041 its reverse (14056133312), we get a palindrome (35389298353).

The spelling of 21333165041 in words is "twenty-one billion, three hundred thirty-three million, one hundred sixty-five thousand, forty-one".