7216111205 has 8 divisors (see below), whose sum is σ = 8801290104. Its totient is φ = 5678251200.

The previous prime is 7216111153. The next prime is 7216111237. The reversal of 7216111205 is 5021116127.

It can be written as a sum of positive squares in 4 ways, for example, as 483252289 + 6732858916 = 21983^2 + 82054^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7216111205 - 2³² = 2921143909 is a prime.

It is a Duffinian number.

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, 11829386 + ... + 11829995.

It is an arithmetic number, because the mean of its divisors is an integer number (1100161263).

Almost surely, 2^7216111205 is an apocalyptic number.

It is an amenable number.

7216111205 is a deficient number, since it is larger than the sum of its proper divisors (1585178899).

7216111205 is a wasteful number, since it uses less digits than its factorization.

7216111205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23659447.

The product of its (nonzero) digits is 840, while the sum is 26.

The square root of 7216111205 is about 84947.6968787265. The cubic root of 7216111205 is about 1932.4179922992.

The spelling of 7216111205 in words is "seven billion, two hundred sixteen million, one hundred eleven thousand, two hundred five".