21214443001 has 8 divisors (see below), whose sum is σ = 22850901504. Its totient is φ = 19637492160.

The previous prime is 21214442983. The next prime is 21214443011. The reversal of 21214443001 is 10034441212.

It is a happy number.

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 21214443001 - 2⁹ = 21214442489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21214443011) 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, 14876176 + ... + 14877601.

It is an arithmetic number, because the mean of its divisors is an integer number (2856362688).

Almost surely, 2^21214443001 is an apocalyptic number.

It is an amenable number.

21214443001 is a deficient number, since it is larger than the sum of its proper divisors (1636458503).

21214443001 is a wasteful number, since it uses less digits than its factorization.

21214443001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29753831.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 21214443001 its reverse (10034441212), we get a palindrome (31248884213).

The spelling of 21214443001 in words is "twenty-one billion, two hundred fourteen million, four hundred forty-three thousand, one".