1310110221 has 16 divisors (see below), whose sum is σ = 1996876928. Its totient is φ = 748440000.

The previous prime is 1310110201. The next prime is 1310110223. The reversal of 1310110221 is 1220110131.

It is not a de Polignac number, because 1310110221 - 2⁷ = 1310110093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1310110197 and 1310110206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310110223) 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, 127371 + ... + 137271.

It is an arithmetic number, because the mean of its divisors is an integer number (124804808).

Almost surely, 2^1310110221 is an apocalyptic number.

It is an amenable number.

1310110221 is a deficient number, since it is larger than the sum of its proper divisors (686766707).

1310110221 is an equidigital number, since it uses as much as digits as its factorization.

1310110221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16212.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 1310110221 is about 36195.4447548307. Note that the first 3 decimals coincide. The cubic root of 1310110221 is about 1094.2148680537.

Adding to 1310110221 its reverse (1220110131), we get a palindrome (2530220352).

The spelling of 1310110221 in words is "one billion, three hundred ten million, one hundred ten thousand, two hundred twenty-one".