21330021310001 has 16 divisors (see below), whose sum is σ = 21495902171520. Its totient is φ = 21164619288960.

The previous prime is 21330021309929. The next prime is 21330021310049. The reversal of 21330021310001 is 10001312003312.

It is a cyclic number.

It is not a de Polignac number, because 21330021310001 - 2¹⁴ = 21330021293617 is a prime.

It is a super-2 number, since 2×21330021310001² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21330021319001) 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 15 ways as a sum of consecutive naturals, for example, 300722021 + ... + 300792941.

It is an arithmetic number, because the mean of its divisors is an integer number (1343493885720).

Almost surely, 2^{21330021310001} is an apocalyptic number.

It is an amenable number.

21330021310001 is a deficient number, since it is larger than the sum of its proper divisors (165880861519).

21330021310001 is a wasteful number, since it uses less digits than its factorization.

21330021310001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74264.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 21330021310001 its reverse (10001312003312), we get a palindrome (31331333313313).

The spelling of 21330021310001 in words is "twenty-one trillion, three hundred thirty billion, twenty-one million, three hundred ten thousand, one".