7122681226 has 16 divisors (see below), whose sum is σ = 11152667880. Its totient is φ = 3408281280.

The previous prime is 7122681173. The next prime is 7122681227. The reversal of 7122681226 is 6221862217.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6510069225 + 612612001 = 80685^2 + 24751^2 .

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (7122681227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 784441 + ... + 793468.

Almost surely, 2^7122681226 is an apocalyptic number.

7122681226 is a deficient number, since it is larger than the sum of its proper divisors (4029986654).

7122681226 is a wasteful number, since it uses less digits than its factorization.

7122681226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1578009.

The product of its digits is 32256, while the sum is 37.

The square root of 7122681226 is about 84395.9787312168. The cubic root of 7122681226 is about 1924.0417990279.

The spelling of 7122681226 in words is "seven billion, one hundred twenty-two million, six hundred eighty-one thousand, two hundred twenty-six".