21202243441007 has 2 divisors, whose sum is σ = 21202243441008. Its totient is φ = 21202243441006.

The previous prime is 21202243440943. The next prime is 21202243441103. The reversal of 21202243441007 is 70014434220212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21202243441007 - 2⁶ = 21202243440943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21202243449007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10601121720503 + 10601121720504.

It is an arithmetic number, because the mean of its divisors is an integer number (10601121720504).

Almost surely, 2^{21202243441007} is an apocalyptic number.

21202243441007 is a deficient number, since it is larger than the sum of its proper divisors (1).

21202243441007 is an equidigital number, since it uses as much as digits as its factorization.

21202243441007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21504, while the sum is 32.

Adding to 21202243441007 its reverse (70014434220212), we get a palindrome (91216677661219).

The spelling of 21202243441007 in words is "twenty-one trillion, two hundred two billion, two hundred forty-three million, four hundred forty-one thousand, seven".