1310120221 has 8 divisors (see below), whose sum is σ = 1318176000. Its totient is φ = 1302085200.

The previous prime is 1310120219. The next prime is 1310120239. The reversal of 1310120221 is 1220210131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1310120221 - 2¹ = 1310120219 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 (1310120261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132396 + ... + 141946.

It is an arithmetic number, because the mean of its divisors is an integer number (164772000).

Almost surely, 2^1310120221 is an apocalyptic number.

It is an amenable number.

1310120221 is a deficient number, since it is larger than the sum of its proper divisors (8055779).

1310120221 is an equidigital number, since it uses as much as digits as its factorization.

1310120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10379.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1310120221 is about 36195.5828934968. The cubic root of 1310120221 is about 1094.2176520741.

Adding to 1310120221 its reverse (1220210131), we get a palindrome (2530330352).

The spelling of 1310120221 in words is "one billion, three hundred ten million, one hundred twenty thousand, two hundred twenty-one".