21320033322127 has 2 divisors, whose sum is σ = 21320033322128. Its totient is φ = 21320033322126.

The previous prime is 21320033322101. The next prime is 21320033322149. The reversal of 21320033322127 is 72122333002312.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21320033322127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21320033362127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10660016661063 + 10660016661064.

It is an arithmetic number, because the mean of its divisors is an integer number (10660016661064).

Almost surely, 2^{21320033322127} is an apocalyptic number.

21320033322127 is a deficient number, since it is larger than the sum of its proper divisors (1).

21320033322127 is an equidigital number, since it uses as much as digits as its factorization.

21320033322127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 31.

Adding to 21320033322127 its reverse (72122333002312), we get a palindrome (93442366324439).

The spelling of 21320033322127 in words is "twenty-one trillion, three hundred twenty billion, thirty-three million, three hundred twenty-two thousand, one hundred twenty-seven".