71021116 has 24 divisors (see below), whose sum is σ = 130349520. Its totient is φ = 33812352.

The previous prime is 71021099. The next prime is 71021131. The reversal of 71021116 is 61112017.

It is a junction number, because it is equal to n+sod(n) for n = 71021093 and 71021102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4275 + ... + 12661.

It is an arithmetic number, because the mean of its divisors is an integer number (5431230).

Almost surely, 2^71021116 is an apocalyptic number.

It is an amenable number.

71021116 is a deficient number, since it is larger than the sum of its proper divisors (59328404).

71021116 is a wasteful number, since it uses less digits than its factorization.

71021116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8493 (or 8491 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 19.

The square root of 71021116 is about 8427.4026841014. The cubic root of 71021116 is about 414.1228213464.

Subtracting from 71021116 its reverse (61112017), we obtain a palindrome (9909099).

The spelling of 71021116 in words is "seventy-one million, twenty-one thousand, one hundred sixteen".