21334044001 has 2 divisors, whose sum is σ = 21334044002. Its totient is φ = 21334044000.

The previous prime is 21334043993. The next prime is 21334044079. The reversal of 21334044001 is 10044043312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21148430625 + 185613376 = 145425^2 + 13624^2 .

It is a cyclic number.

It is not a de Polignac number, because 21334044001 - 2³ = 21334043993 is a prime.

It is not a weakly prime, because it can be changed into another prime (21334044701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10667022000 + 10667022001.

It is an arithmetic number, because the mean of its divisors is an integer number (10667022001).

Almost surely, 2^21334044001 is an apocalyptic number.

It is an amenable number.

21334044001 is a deficient number, since it is larger than the sum of its proper divisors (1).

21334044001 is an equidigital number, since it uses as much as digits as its factorization.

21334044001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21334044001 its reverse (10044043312), we get a palindrome (31378087313).

The spelling of 21334044001 in words is "twenty-one billion, three hundred thirty-four million, forty-four thousand, one".