21032230401 has 24 divisors (see below), whose sum is σ = 37390633280. Its totient is φ = 11093923296.

The previous prime is 21032230397. The next prime is 21032230447. The reversal of 21032230401 is 10403223012.

21032230401 is a `hidden beast` number, since 2 + 1 + 0 + 32 + 230 + 401 = 666.

It is not a de Polignac number, because 21032230401 - 2² = 21032230397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21032230301) 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 23 ways as a sum of consecutive naturals, for example, 12839371 + ... + 12841008.

Almost surely, 2^21032230401 is an apocalyptic number.

21032230401 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21032230401 is a deficient number, since it is larger than the sum of its proper divisors (16358402879).

21032230401 is a wasteful number, since it uses less digits than its factorization.

21032230401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25680405 (or 25680402 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 21032230401 its reverse (10403223012), we get a palindrome (31435453413).

The spelling of 21032230401 in words is "twenty-one billion, thirty-two million, two hundred thirty thousand, four hundred one".