21332311207 has 2 divisors, whose sum is σ = 21332311208. Its totient is φ = 21332311206.

The previous prime is 21332311171. The next prime is 21332311219. The reversal of 21332311207 is 70211323312.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21332311207 - 2²⁷ = 21198093479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21332314207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10666155603 + 10666155604.

It is an arithmetic number, because the mean of its divisors is an integer number (10666155604).

Almost surely, 2^21332311207 is an apocalyptic number.

21332311207 is a deficient number, since it is larger than the sum of its proper divisors (1).

21332311207 is an equidigital number, since it uses as much as digits as its factorization.

21332311207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 25.

Adding to 21332311207 its reverse (70211323312), we get a palindrome (91543634519).

The spelling of 21332311207 in words is "twenty-one billion, three hundred thirty-two million, three hundred eleven thousand, two hundred seven".