7226221155 has 16 divisors (see below), whose sum is σ = 11566311840. Its totient is φ = 3852531968.

The previous prime is 7226221153. The next prime is 7226221181. The reversal of 7226221155 is 5511226227.

It is a cyclic number.

It is not a de Polignac number, because 7226221155 - 2¹ = 7226221153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7226221153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49050 + ... + 129839.

It is an arithmetic number, because the mean of its divisors is an integer number (722894490).

Almost surely, 2^7226221155 is an apocalyptic number.

7226221155 is a deficient number, since it is larger than the sum of its proper divisors (4340090685).

7226221155 is a wasteful number, since it uses less digits than its factorization.

7226221155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181590.

The product of its digits is 16800, while the sum is 33.

The square root of 7226221155 is about 85007.1829612063. The cubic root of 7226221155 is about 1933.3200262824.

The spelling of 7226221155 in words is "seven billion, two hundred twenty-six million, two hundred twenty-one thousand, one hundred fifty-five".