21300001007 has 2 divisors, whose sum is σ = 21300001008. Its totient is φ = 21300001006.

The previous prime is 21300000991. The next prime is 21300001031. The reversal of 21300001007 is 70010000312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21300001007 - 2⁴ = 21300000991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21300000982 and 21300001000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21300001057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10650000503 + 10650000504.

It is an arithmetic number, because the mean of its divisors is an integer number (10650000504).

Almost surely, 2^21300001007 is an apocalyptic number.

21300001007 is a deficient number, since it is larger than the sum of its proper divisors (1).

21300001007 is an equidigital number, since it uses as much as digits as its factorization.

21300001007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42, while the sum is 14.

Adding to 21300001007 its reverse (70010000312), we get a palindrome (91310001319).

The spelling of 21300001007 in words is "twenty-one billion, three hundred million, one thousand, seven".