1205011227406 has 8 divisors (see below), whose sum is σ = 2065733532720. Its totient is φ = 516433383168.

The previous prime is 1205011227403. The next prime is 1205011227461. The reversal of 1205011227406 is 6047221105021.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205011227403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43036115251 + ... + 43036115278.

It is an arithmetic number, because the mean of its divisors is an integer number (258216691590).

Almost surely, 2^{1205011227406} is an apocalyptic number.

1205011227406 is a deficient number, since it is larger than the sum of its proper divisors (860722305314).

1205011227406 is an equidigital number, since it uses as much as digits as its factorization.

1205011227406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86072230538.

The product of its (nonzero) digits is 6720, while the sum is 31.

The spelling of 1205011227406 in words is "one trillion, two hundred five billion, eleven million, two hundred twenty-seven thousand, four hundred six".