11221666816426 has 32 divisors (see below), whose sum is σ = 18488453575680. Its totient is φ = 5065864564800.

The previous prime is 11221666816417. The next prime is 11221666816427. The reversal of 11221666816426 is 62461866612211.

It is a super-2 number, since 2×11221666816426² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11221666816427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6521880 + ... + 8060908.

It is an arithmetic number, because the mean of its divisors is an integer number (577764174240).

Almost surely, 2^{11221666816426} is an apocalyptic number.

11221666816426 is a deficient number, since it is larger than the sum of its proper divisors (7266786759254).

11221666816426 is a wasteful number, since it uses less digits than its factorization.

11221666816426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1541310.

The product of its digits is 1990656, while the sum is 52.

The spelling of 11221666816426 in words is "eleven trillion, two hundred twenty-one billion, six hundred sixty-six million, eight hundred sixteen thousand, four hundred twenty-six".