21001332132203 has 8 divisors (see below), whose sum is σ = 21011887893600. Its totient is φ = 20990776847040.

The previous prime is 21001332132161. The next prime is 21001332132283. The reversal of 21001332132203 is 30223123310012.

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 21001332132203 - 2³⁶ = 20932612655467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21001332132283) 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, 116466773 + ... + 116646953.

It is an arithmetic number, because the mean of its divisors is an integer number (2626485986700).

Almost surely, 2^{21001332132203} is an apocalyptic number.

21001332132203 is a deficient number, since it is larger than the sum of its proper divisors (10555761397).

21001332132203 is a wasteful number, since it uses less digits than its factorization.

21001332132203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238117.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 21001332132203 its reverse (30223123310012), we get a palindrome (51224455442215).

The spelling of 21001332132203 in words is "twenty-one trillion, one billion, three hundred thirty-two million, one hundred thirty-two thousand, two hundred three".