1313002221 has 8 divisors (see below), whose sum is σ = 1754469024. Its totient is φ = 873435120.

The previous prime is 1313002211. The next prime is 1313002237. The reversal of 1313002221 is 1222003131.

1313002221 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 1313002221 - 2⁵ = 1313002189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1313002221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313002211) 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, 473311 + ... + 476076.

It is an arithmetic number, because the mean of its divisors is an integer number (219308628).

Almost surely, 2^1313002221 is an apocalyptic number.

It is an amenable number.

1313002221 is a deficient number, since it is larger than the sum of its proper divisors (441466803).

1313002221 is an equidigital number, since it uses as much as digits as its factorization.

1313002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949851.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1313002221 is about 36235.3725108491. The cubic root of 1313002221 is about 1095.0194170990.

Adding to 1313002221 its reverse (1222003131), we get a palindrome (2535005352).

The spelling of 1313002221 in words is "one billion, three hundred thirteen million, two thousand, two hundred twenty-one".