21000310200007 has 2 divisors, whose sum is σ = 21000310200008. Its totient is φ = 21000310200006.

The previous prime is 21000310199969. The next prime is 21000310200029. The reversal of 21000310200007 is 70000201300012.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21000310200007 - 2³⁵ = 20965950461639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21000310200607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10500155100003 + 10500155100004.

It is an arithmetic number, because the mean of its divisors is an integer number (10500155100004).

Almost surely, 2^{21000310200007} is an apocalyptic number.

21000310200007 is a deficient number, since it is larger than the sum of its proper divisors (1).

21000310200007 is an equidigital number, since it uses as much as digits as its factorization.

21000310200007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84, while the sum is 16.

Adding to 21000310200007 its reverse (70000201300012), we get a palindrome (91000511500019).

The spelling of 21000310200007 in words is "twenty-one trillion, three hundred ten million, two hundred thousand, seven".