21001100230007 has 2 divisors, whose sum is σ = 21001100230008. Its totient is φ = 21001100230006.

The previous prime is 21001100229961. The next prime is 21001100230039. The reversal of 21001100230007 is 70003200110012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21001100230007 - 2⁴⁴ = 3408914185591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21001100230057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10500550115003 + 10500550115004.

It is an arithmetic number, because the mean of its divisors is an integer number (10500550115004).

Almost surely, 2^{21001100230007} is an apocalyptic number.

21001100230007 is a deficient number, since it is larger than the sum of its proper divisors (1).

21001100230007 is an equidigital number, since it uses as much as digits as its factorization.

21001100230007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84, while the sum is 17.

Adding to 21001100230007 its reverse (70003200110012), we get a palindrome (91004300340019).

The spelling of 21001100230007 in words is "twenty-one trillion, one billion, one hundred million, two hundred thirty thousand, seven".