71002202111011 has 4 divisors (see below), whose sum is σ = 71089967503800. Its totient is φ = 70914436718224.

The previous prime is 71002202110933. The next prime is 71002202111083. The reversal of 71002202111011 is 11011120220017.

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

It is a cyclic number.

It is not a de Polignac number, because 71002202111011 - 2²¹ = 71002200013859 is a prime.

It is a super-2 number, since 2×71002202111011² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71002202111011.

It is not an unprimeable number, because it can be changed into a prime (71002202111411) 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, 43882695181 + ... + 43882696798.

It is an arithmetic number, because the mean of its divisors is an integer number (17772491875950).

Almost surely, 2^{71002202111011} is an apocalyptic number.

71002202111011 is a deficient number, since it is larger than the sum of its proper divisors (87765392789).

71002202111011 is an equidigital number, since it uses as much as digits as its factorization.

71002202111011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87765392788.

The product of its (nonzero) digits is 56, while the sum is 19.

Adding to 71002202111011 its reverse (11011120220017), we get a palindrome (82013322331028).

The spelling of 71002202111011 in words is "seventy-one trillion, two billion, two hundred two million, one hundred eleven thousand, eleven".