21232342207 has 2 divisors, whose sum is σ = 21232342208. Its totient is φ = 21232342206.

The previous prime is 21232342193. The next prime is 21232342211. The reversal of 21232342207 is 70224323212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21232342207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21232342907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10616171103 + 10616171104.

It is an arithmetic number, because the mean of its divisors is an integer number (10616171104).

Almost surely, 2^21232342207 is an apocalyptic number.

21232342207 is a deficient number, since it is larger than the sum of its proper divisors (1).

21232342207 is an equidigital number, since it uses as much as digits as its factorization.

21232342207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 28.

Adding to 21232342207 its reverse (70224323212), we get a palindrome (91456665419).

The spelling of 21232342207 in words is "twenty-one billion, two hundred thirty-two million, three hundred forty-two thousand, two hundred seven".