1031221213303 has 4 divisors (see below), whose sum is σ = 1031233571280. Its totient is φ = 1031208855328.

The previous prime is 1031221213289. The next prime is 1031221213327. The reversal of 1031221213303 is 3033121221301.

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

It is a cyclic number.

It is not a de Polignac number, because 1031221213303 - 2²⁵ = 1031187658871 is a prime.

It is a super-2 number, since 2×1031221213303² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031221213703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6052963 + ... + 6220996.

It is an arithmetic number, because the mean of its divisors is an integer number (257808392820).

Almost surely, 2^{1031221213303} is an apocalyptic number.

1031221213303 is a deficient number, since it is larger than the sum of its proper divisors (12357977).

1031221213303 is an equidigital number, since it uses as much as digits as its factorization.

1031221213303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12357976.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1031221213303 its reverse (3033121221301), we get a palindrome (4064342434604).

The spelling of 1031221213303 in words is "one trillion, thirty-one billion, two hundred twenty-one million, two hundred thirteen thousand, three hundred three".