21230064007 has 2 divisors, whose sum is σ = 21230064008. Its totient is φ = 21230064006.

The previous prime is 21230064001. The next prime is 21230064019. The reversal of 21230064007 is 70046003212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21230064007 - 2¹⁹ = 21229539719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21230064001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10615032003 + 10615032004.

It is an arithmetic number, because the mean of its divisors is an integer number (10615032004).

Almost surely, 2^21230064007 is an apocalyptic number.

21230064007 is a deficient number, since it is larger than the sum of its proper divisors (1).

21230064007 is an equidigital number, since it uses as much as digits as its factorization.

21230064007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 25.

Adding to 21230064007 its reverse (70046003212), we get a palindrome (91276067219).

The spelling of 21230064007 in words is "twenty-one billion, two hundred thirty million, sixty-four thousand, seven".