21334433201 has 8 divisors (see below), whose sum is σ = 21511418880. Its totient is φ = 21157588368.

The previous prime is 21334433191. The next prime is 21334433249. The reversal of 21334433201 is 10233443312.

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

It is not a de Polignac number, because 21334433201 - 2¹⁰ = 21334432177 is a prime.

It is a super-2 number, since 2×21334433201² (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 (21334433251) 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, 280670 + ... + 348488.

It is an arithmetic number, because the mean of its divisors is an integer number (2688927360).

Almost surely, 2^21334433201 is an apocalyptic number.

It is an amenable number.

21334433201 is a deficient number, since it is larger than the sum of its proper divisors (176985679).

21334433201 is a wasteful number, since it uses less digits than its factorization.

21334433201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70423.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 21334433201 its reverse (10233443312), we get a palindrome (31567876513).

The spelling of 21334433201 in words is "twenty-one billion, three hundred thirty-four million, four hundred thirty-three thousand, two hundred one".