21244232001 has 8 divisors (see below), whose sum is σ = 28984378720. Its totient is φ = 13833453312.

The previous prime is 21244231979. The next prime is 21244232027. The reversal of 21244232001 is 10023244212.

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

It is not a de Polignac number, because 21244232001 - 2¹⁰ = 21244230977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21244232081) 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, 82341856 + ... + 82342113.

It is an arithmetic number, because the mean of its divisors is an integer number (3623047340).

Almost surely, 2^21244232001 is an apocalyptic number.

It is an amenable number.

21244232001 is a deficient number, since it is larger than the sum of its proper divisors (7740146719).

21244232001 is a wasteful number, since it uses less digits than its factorization.

21244232001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164684015.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 21244232001 its reverse (10023244212), we get a palindrome (31267476213).

The spelling of 21244232001 in words is "twenty-one billion, two hundred forty-four million, two hundred thirty-two thousand, one".