21430041001 has 8 divisors (see below), whose sum is σ = 21503270664. Its totient is φ = 21356847360.

The previous prime is 21430040927. The next prime is 21430041049. The reversal of 21430041001 is 10014003412.

It can be written as a sum of positive squares in 4 ways, for example, as 119880601 + 21310160400 = 10949^2 + 145980^2 .

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 21430041001 - 2⁷ = 21430040873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21430021001) 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, 1763121 + ... + 1775233.

It is an arithmetic number, because the mean of its divisors is an integer number (2687908833).

Almost surely, 2^21430041001 is an apocalyptic number.

It is an amenable number.

21430041001 is a deficient number, since it is larger than the sum of its proper divisors (73229663).

21430041001 is a wasteful number, since it uses less digits than its factorization.

21430041001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18011.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 21430041001 its reverse (10014003412), we get a palindrome (31444044413).

The spelling of 21430041001 in words is "twenty-one billion, four hundred thirty million, forty-one thousand, one".