21233201001 has 8 divisors (see below), whose sum is σ = 28363267584. Its totient is φ = 14129300880.

The previous prime is 21233200997. The next prime is 21233201009. The reversal of 21233201001 is 10010233212.

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

It is not a de Polignac number, because 21233201001 - 2² = 21233200997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21233201009) 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, 6539721 + ... + 6542966.

It is an arithmetic number, because the mean of its divisors is an integer number (3545408448).

Almost surely, 2^21233201001 is an apocalyptic number.

It is an amenable number.

21233201001 is a deficient number, since it is larger than the sum of its proper divisors (7130066583).

21233201001 is a wasteful number, since it uses less digits than its factorization.

21233201001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13083231.

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

Adding to 21233201001 its reverse (10010233212), we get a palindrome (31243434213).

The spelling of 21233201001 in words is "twenty-one billion, two hundred thirty-three million, two hundred one thousand, one".