103221121013 has 8 divisors (see below), whose sum is σ = 105219631800. Its totient is φ = 101224497088.

The previous prime is 103221121009. The next prime is 103221121037. The reversal of 103221121013 is 310121122301.

It can be written as a sum of positive squares in 4 ways, for example, as 24258997009 + 78962124004 = 155753^2 + 281002^2 .

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 103221121013 - 2² = 103221121009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103221120982 and 103221121000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103221121063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 360998 + ... + 580311.

It is an arithmetic number, because the mean of its divisors is an integer number (13152453975).

Almost surely, 2^103221121013 is an apocalyptic number.

It is an amenable number.

103221121013 is a deficient number, since it is larger than the sum of its proper divisors (1998510787).

103221121013 is an equidigital number, since it uses as much as digits as its factorization.

103221121013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943431.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 103221121013 its reverse (310121122301), we get a palindrome (413342243314).

The spelling of 103221121013 in words is "one hundred three billion, two hundred twenty-one million, one hundred twenty-one thousand, thirteen".