21320132001 has 8 divisors (see below), whose sum is σ = 32487820224. Its totient is φ = 12182932560.

The previous prime is 21320131997. The next prime is 21320132011. The reversal of 21320132001 is 10023102312.

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

It is not a de Polignac number, because 21320132001 - 2² = 21320131997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21320132011) 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, 507622170 + ... + 507622211.

It is an arithmetic number, because the mean of its divisors is an integer number (4060977528).

Almost surely, 2^21320132001 is an apocalyptic number.

21320132001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21320132001 is a deficient number, since it is larger than the sum of its proper divisors (11167688223).

21320132001 is a wasteful number, since it uses less digits than its factorization.

21320132001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015244391.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21320132001 its reverse (10023102312), we get a palindrome (31343234313).

The spelling of 21320132001 in words is "twenty-one billion, three hundred twenty million, one hundred thirty-two thousand, one".