71102230112021 has 4 divisors (see below), whose sum is σ = 71110276090092. Its totient is φ = 71094184133952.

The previous prime is 71102230111937. The next prime is 71102230112059. The reversal of 71102230112021 is 12021103220117.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 64715363911396 + 6386866200625 = 8044586^2 + 2527225^2 .

It is a cyclic number.

It is not a de Polignac number, because 71102230112021 - 2²² = 71102225917717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71102230112071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4022975780 + ... + 4022993453.

It is an arithmetic number, because the mean of its divisors is an integer number (17777569022523).

Almost surely, 2^{71102230112021} is an apocalyptic number.

It is an amenable number.

71102230112021 is a deficient number, since it is larger than the sum of its proper divisors (8045978071).

71102230112021 is an equidigital number, since it uses as much as digits as its factorization.

71102230112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8045978070.

The product of its (nonzero) digits is 336, while the sum is 23.

Adding to 71102230112021 its reverse (12021103220117), we get a palindrome (83123333332138).

The spelling of 71102230112021 in words is "seventy-one trillion, one hundred two billion, two hundred thirty million, one hundred twelve thousand, twenty-one".