21000323013201 has 24 divisors (see below), whose sum is σ = 34698070180800. Its totient is φ = 11989498710816.

The previous prime is 21000323013083. The next prime is 21000323013203. The reversal of 21000323013201 is 10231032300012.

21000323013201 is a `hidden beast` number, since 2 + 10 + 0 + 0 + 32 + 301 + 320 + 1 = 666.

It is not a de Polignac number, because 21000323013201 - 2¹⁹ = 21000322488913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21000323013203) 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 23 ways as a sum of consecutive naturals, for example, 148343526 + ... + 148485023.

It is an arithmetic number, because the mean of its divisors is an integer number (1445752924200).

Almost surely, 2^{21000323013201} is an apocalyptic number.

21000323013201 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21000323013201 is a deficient number, since it is larger than the sum of its proper divisors (13697747167599).

21000323013201 is a wasteful number, since it uses less digits than its factorization.

21000323013201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296829685 (or 296829682 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21000323013201 its reverse (10231032300012), we get a palindrome (31231355313213).

The spelling of 21000323013201 in words is "twenty-one trillion, three hundred twenty-three million, thirteen thousand, two hundred one".