126221023066666 has 8 divisors (see below), whose sum is σ = 206543492290944. Its totient is φ = 57373192303020.

The previous prime is 126221023066603. The next prime is 126221023066757. The reversal of 126221023066666 is 666660320122621.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2868659615130 + ... + 2868659615173.

It is an arithmetic number, because the mean of its divisors is an integer number (25817936536368).

Almost surely, 2^{126221023066666} is an apocalyptic number.

126221023066666 is a deficient number, since it is larger than the sum of its proper divisors (80322469224278).

126221023066666 is a wasteful number, since it uses less digits than its factorization.

126221023066666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5737319230316.

The product of its (nonzero) digits is 2239488, while the sum is 49.

The spelling of 126221023066666 in words is "one hundred twenty-six trillion, two hundred twenty-one billion, twenty-three million, sixty-six thousand, six hundred sixty-six".