10311221002 has 4 divisors (see below), whose sum is σ = 15466831506. Its totient is φ = 5155610500.

The previous prime is 10311220981. The next prime is 10311221009. The reversal of 10311221002 is 20012211301.

10311221002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 8335507401 + 1975713601 = 91299^2 + 44449^2 .

It is not an unprimeable number, because it can be changed into a prime (10311221009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2577805249 + ... + 2577805252.

Almost surely, 2^10311221002 is an apocalyptic number.

10311221002 is a deficient number, since it is larger than the sum of its proper divisors (5155610504).

10311221002 is an equidigital number, since it uses as much as digits as its factorization.

10311221002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5155610503.

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

Adding to 10311221002 its reverse (20012211301), we get a palindrome (30323432303).

The spelling of 10311221002 in words is "ten billion, three hundred eleven million, two hundred twenty-one thousand, two".