1220113163 has 2 divisors, whose sum is σ = 1220113164. Its totient is φ = 1220113162.

The previous prime is 1220113133. The next prime is 1220113183. The reversal of 1220113163 is 3613110221.

It is an a-pointer prime, because the next prime (1220113183) can be obtained adding 1220113163 to its sum of digits (20).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1220113163 - 2⁶ = 1220113099 is a prime.

It is a super-2 number, since 2×1220113163² = 2977352261051729138, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1220113133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610056581 + 610056582.

It is an arithmetic number, because the mean of its divisors is an integer number (610056582).

Almost surely, 2^1220113163 is an apocalyptic number.

1220113163 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220113163 is an equidigital number, since it uses as much as digits as its factorization.

1220113163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 1220113163 is about 34930.1182792157. The cubic root of 1220113163 is about 1068.5627668405.

Adding to 1220113163 its reverse (3613110221), we get a palindrome (4833223384).

The spelling of 1220113163 in words is "one billion, two hundred twenty million, one hundred thirteen thousand, one hundred sixty-three".