1226099381666 has 8 divisors (see below), whose sum is σ = 1839189542400. Its totient is φ = 613036200868.

The previous prime is 1226099381653. The next prime is 1226099381677. The reversal of 1226099381666 is 6661839906221.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6630986 + ... + 6813381.

It is an arithmetic number, because the mean of its divisors is an integer number (229898692800).

Almost surely, 2^{1226099381666} is an apocalyptic number.

1226099381666 is a deficient number, since it is larger than the sum of its proper divisors (613090160734).

1226099381666 is a wasteful number, since it uses less digits than its factorization.

1226099381666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13489968.

The product of its (nonzero) digits is 10077696, while the sum is 59.

The spelling of 1226099381666 in words is "one trillion, two hundred twenty-six billion, ninety-nine million, three hundred eighty-one thousand, six hundred sixty-six".