1220126105 has 16 divisors (see below), whose sum is σ = 1600893504. Its totient is φ = 885343680.

The previous prime is 1220126101. The next prime is 1220126111. The reversal of 1220126105 is 5016210221.

It is not a de Polignac number, because 1220126105 - 2² = 1220126101 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220126101) 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, 674 + ... + 49403.

It is an arithmetic number, because the mean of its divisors is an integer number (100055844).

Almost surely, 2^1220126105 is an apocalyptic number.

It is an amenable number.

1220126105 is a deficient number, since it is larger than the sum of its proper divisors (380767399).

1220126105 is a wasteful number, since it uses less digits than its factorization.

1220126105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50536.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1220126105 is about 34930.3035343239. The cubic root of 1220126105 is about 1068.5665449847.

Adding to 1220126105 its reverse (5016210221), we get a palindrome (6236336326).

The spelling of 1220126105 in words is "one billion, two hundred twenty million, one hundred twenty-six thousand, one hundred five".