21022300307 has 2 divisors, whose sum is σ = 21022300308. Its totient is φ = 21022300306.

The previous prime is 21022300291. The next prime is 21022300319. The reversal of 21022300307 is 70300322012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21022300307 - 2⁴ = 21022300291 is a prime.

It is a super-2 number, since 2×21022300307² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21022300007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511150153 + 10511150154.

It is an arithmetic number, because the mean of its divisors is an integer number (10511150154).

Almost surely, 2^21022300307 is an apocalyptic number.

21022300307 is a deficient number, since it is larger than the sum of its proper divisors (1).

21022300307 is an equidigital number, since it uses as much as digits as its factorization.

21022300307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 20.

Adding to 21022300307 its reverse (70300322012), we get a palindrome (91322622319).

The spelling of 21022300307 in words is "twenty-one billion, twenty-two million, three hundred thousand, three hundred seven".