71020131102011 has 16 divisors (see below), whose sum is σ = 87463785206784. Its totient is φ = 56156785100064.

The previous prime is 71020131101981. The next prime is 71020131102013. The reversal of 71020131102011 is 11020113102017.

It is a cyclic number.

It is not a de Polignac number, because 71020131102011 - 2⁶ = 71020131101947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71020131102013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 242679215 + ... + 242971688.

It is an arithmetic number, because the mean of its divisors is an integer number (5466486575424).

Almost surely, 2^{71020131102011} is an apocalyptic number.

71020131102011 is a deficient number, since it is larger than the sum of its proper divisors (16443654104773).

71020131102011 is a wasteful number, since it uses less digits than its factorization.

71020131102011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485652530.

The product of its (nonzero) digits is 84, while the sum is 20.

Adding to 71020131102011 its reverse (11020113102017), we get a palindrome (82040244204028).

The spelling of 71020131102011 in words is "seventy-one trillion, twenty billion, one hundred thirty-one million, one hundred two thousand, eleven".