1220313101 has 6 divisors (see below), whose sum is σ = 1419547950. Its totient is φ = 1045982616.

The previous prime is 1220313037. The next prime is 1220313119. The reversal of 1220313101 is 1013130221.

It can be written as a sum of positive squares in only one way, i.e., 754875625 + 465437476 = 27475^2 + 21574^2 .

It is not a de Polignac number, because 1220313101 - 2⁶ = 1220313037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220313121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12452126 + ... + 12452223.

It is an arithmetic number, because the mean of its divisors is an integer number (236591325).

Almost surely, 2^1220313101 is an apocalyptic number.

It is an amenable number.

1220313101 is a deficient number, since it is larger than the sum of its proper divisors (199234849).

1220313101 is an equidigital number, since it uses as much as digits as its factorization.

1220313101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24904363 (or 24904356 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1220313101 is about 34932.9801333926. The cubic root of 1220313101 is about 1068.6211315453.

Adding to 1220313101 its reverse (1013130221), we get a palindrome (2233443322).

The spelling of 1220313101 in words is "one billion, two hundred twenty million, three hundred thirteen thousand, one hundred one".