21424332201 has 8 divisors (see below), whose sum is σ = 28848606144. Its totient is φ = 14141473200.

The previous prime is 21424332197. The next prime is 21424332203. The reversal of 21424332201 is 10223342412.

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 21424332201 - 2² = 21424332197 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21424332203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35353381 + ... + 35353986.

It is an arithmetic number, because the mean of its divisors is an integer number (3606075768).

Almost surely, 2^21424332201 is an apocalyptic number.

It is an amenable number.

21424332201 is a deficient number, since it is larger than the sum of its proper divisors (7424273943).

21424332201 is a wasteful number, since it uses less digits than its factorization.

21424332201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70707471.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 21424332201 its reverse (10223342412), we get a palindrome (31647674613).

The spelling of 21424332201 in words is "twenty-one billion, four hundred twenty-four million, three hundred thirty-two thousand, two hundred one".