71330102206021 has 2 divisors, whose sum is σ = 71330102206022. Its totient is φ = 71330102206020.

The previous prime is 71330102206009. The next prime is 71330102206067. The reversal of 71330102206021 is 12060220103317.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48513105568225 + 22816996637796 = 6965135^2 + 4776714^2 .

It is a cyclic number.

It is not a de Polignac number, because 71330102206021 - 2⁷ = 71330102205893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71330102206621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35665051103010 + 35665051103011.

It is an arithmetic number, because the mean of its divisors is an integer number (35665051103011).

Almost surely, 2^{71330102206021} is an apocalyptic number.

It is an amenable number.

71330102206021 is a deficient number, since it is larger than the sum of its proper divisors (1).

71330102206021 is an equidigital number, since it uses as much as digits as its factorization.

71330102206021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 28.

Adding to 71330102206021 its reverse (12060220103317), we get a palindrome (83390322309338).

The spelling of 71330102206021 in words is "seventy-one trillion, three hundred thirty billion, one hundred two million, two hundred six thousand, twenty-one".