21001464201 has 8 divisors (see below), whose sum is σ = 28356407680. Its totient is φ = 13823748432.

The previous prime is 21001464193. The next prime is 21001464203. The reversal of 21001464201 is 10246410012.

It is a happy number.

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

It is not a de Polignac number, because 21001464201 - 2³ = 21001464193 is a prime.

It is a super-2 number, since 2×21001464201² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21001464203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44306650 + ... + 44307123.

It is an arithmetic number, because the mean of its divisors is an integer number (3544550960).

Almost surely, 2^21001464201 is an apocalyptic number.

It is an amenable number.

21001464201 is a deficient number, since it is larger than the sum of its proper divisors (7354943479).

21001464201 is an equidigital number, since it uses as much as digits as its factorization.

21001464201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88613855.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 21001464201 its reverse (10246410012), we get a palindrome (31247874213).

The spelling of 21001464201 in words is "twenty-one billion, one million, four hundred sixty-four thousand, two hundred one".