1220105117 has 16 divisors (see below), whose sum is σ = 1522194432. Its totient is φ = 950091120.

The previous prime is 1220105111. The next prime is 1220105123. The reversal of 1220105117 is 7115010221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1220105111) and next prime (1220105123).

It is not a de Polignac number, because 1220105117 - 2⁸ = 1220104861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220105111) 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, 132848 + ... + 141734.

It is an arithmetic number, because the mean of its divisors is an integer number (95137152).

Almost surely, 2^1220105117 is an apocalyptic number.

It is an amenable number.

1220105117 is a deficient number, since it is larger than the sum of its proper divisors (302089315).

1220105117 is a wasteful number, since it uses less digits than its factorization.

1220105117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10688.

The product of its (nonzero) digits is 140, while the sum is 20.

The square root of 1220105117 is about 34930.0031062123. The cubic root of 1220105117 is about 1068.5604179669.

Adding to 1220105117 its reverse (7115010221), we get a palindrome (8335115338).

The spelling of 1220105117 in words is "one billion, two hundred twenty million, one hundred five thousand, one hundred seventeen".