10405221266 has 16 divisors (see below), whose sum is σ = 17099810208. Its totient is φ = 4709344800.

The previous prime is 10405221247. The next prime is 10405221271. The reversal of 10405221266 is 66212250401.

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, 1009820 + ... + 1020071.

It is an arithmetic number, because the mean of its divisors is an integer number (1068738138).

Almost surely, 2^10405221266 is an apocalyptic number.

10405221266 is a deficient number, since it is larger than the sum of its proper divisors (6694588942).

10405221266 is a wasteful number, since it uses less digits than its factorization.

10405221266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2030137.

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 10405221266 its reverse (66212250401), we get a palindrome (76617471667).

The spelling of 10405221266 in words is "ten billion, four hundred five million, two hundred twenty-one thousand, two hundred sixty-six".