1012130203321 has 4 divisors (see below), whose sum is σ = 1022564535412. Its totient is φ = 1001695871232.

The previous prime is 1012130203309. The next prime is 1012130203333. The reversal of 1012130203321 is 1233020312101.

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

It is an interprime number because it is at equal distance from previous prime (1012130203309) and next prime (1012130203333).

It can be written as a sum of positive squares in 2 ways, for example, as 330533006400 + 681597196921 = 574920^2 + 825589^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012130203321 - 2⁵ = 1012130203289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012130203421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5217165900 + ... + 5217166093.

It is an arithmetic number, because the mean of its divisors is an integer number (255641133853).

Almost surely, 2^{1012130203321} is an apocalyptic number.

It is an amenable number.

1012130203321 is a deficient number, since it is larger than the sum of its proper divisors (10434332091).

1012130203321 is an equidigital number, since it uses as much as digits as its factorization.

1012130203321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10434332090.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1012130203321 its reverse (1233020312101), we get a palindrome (2245150515422).

The spelling of 1012130203321 in words is "one trillion, twelve billion, one hundred thirty million, two hundred three thousand, three hundred twenty-one".