7205216111 has 2 divisors, whose sum is σ = 7205216112. Its totient is φ = 7205216110.

The previous prime is 7205216089. The next prime is 7205216129. The reversal of 7205216111 is 1116125027.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7205216111 - 2⁶ = 7205216047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7205516111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3602608055 + 3602608056.

It is an arithmetic number, because the mean of its divisors is an integer number (3602608056).

Almost surely, 2^7205216111 is an apocalyptic number.

7205216111 is a deficient number, since it is larger than the sum of its proper divisors (1).

7205216111 is an equidigital number, since it uses as much as digits as its factorization.

7205216111 is an evil number, because the sum of its binary digits is even.

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

The square root of 7205216111 is about 84883.5444064396. The cubic root of 7205216111 is about 1931.4449621870. Note that the first 3 decimals are identical.

The spelling of 7205216111 in words is "seven billion, two hundred five million, two hundred sixteen thousand, one hundred eleven".