21432241401 has 8 divisors (see below), whose sum is σ = 28635982080. Its totient is φ = 14258330832.

The previous prime is 21432241387. The next prime is 21432241427. The reversal of 21432241401 is 10414223412.

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

It is not a de Polignac number, because 21432241401 - 2⁷ = 21432241273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21432241451) 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, 7455850 + ... + 7458723.

It is an arithmetic number, because the mean of its divisors is an integer number (3579497760).

Almost surely, 2^21432241401 is an apocalyptic number.

It is an amenable number.

21432241401 is a deficient number, since it is larger than the sum of its proper divisors (7203740679).

21432241401 is a wasteful number, since it uses less digits than its factorization.

21432241401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14915055.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 21432241401 its reverse (10414223412), we get a palindrome (31846464813).

The spelling of 21432241401 in words is "twenty-one billion, four hundred thirty-two million, two hundred forty-one thousand, four hundred one".