21330101001 has 8 divisors (see below), whose sum is σ = 31025601504. Its totient is φ = 12927333920.

The previous prime is 21330100999. The next prime is 21330101003. The reversal of 21330101001 is 10010103312.

It is an interprime number because it is at equal distance from previous prime (21330100999) and next prime (21330101003).

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 21330101001 - 2¹ = 21330100999 is a prime.

It is a super-2 number, since 2×21330101001² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21330101003) 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 7 ways as a sum of consecutive naturals, for example, 323183316 + ... + 323183381.

It is an arithmetic number, because the mean of its divisors is an integer number (3878200188).

Almost surely, 2^21330101001 is an apocalyptic number.

It is an amenable number.

21330101001 is a deficient number, since it is larger than the sum of its proper divisors (9695500503).

21330101001 is a wasteful number, since it uses less digits than its factorization.

21330101001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646366711.

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 21330101001 its reverse (10010103312), we get a palindrome (31340204313).

The spelling of 21330101001 in words is "twenty-one billion, three hundred thirty million, one hundred one thousand, one".