8221126605 has 8 divisors (see below), whose sum is σ = 13153802592. Its totient is φ = 4384600848.

The previous prime is 8221126559. The next prime is 8221126631. The reversal of 8221126605 is 5066211228.

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

It is not a de Polignac number, because 8221126605 - 2¹⁷ = 8220995533 is a prime.

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, 274037539 + ... + 274037568.

It is an arithmetic number, because the mean of its divisors is an integer number (1644225324).

Almost surely, 2^8221126605 is an apocalyptic number.

It is an amenable number.

8221126605 is a deficient number, since it is larger than the sum of its proper divisors (4932675987).

8221126605 is a wasteful number, since it uses less digits than its factorization.

8221126605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548075115.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 8221126605 is about 90670.4285034542. The cubic root of 8221126605 is about 2018.2599959912.

The spelling of 8221126605 in words is "eight billion, two hundred twenty-one million, one hundred twenty-six thousand, six hundred five".