103221213131221 has 4 divisors (see below), whose sum is σ = 108653908559200. Its totient is φ = 97788517703244.

The previous prime is 103221213131191. The next prime is 103221213131233. The reversal of 103221213131221 is 122131312122301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 103221213131221 - 2¹⁹ = 103221212606933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103221213231221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2716347713961 + ... + 2716347713998.

It is an arithmetic number, because the mean of its divisors is an integer number (27163477139800).

Almost surely, 2^{103221213131221} is an apocalyptic number.

It is an amenable number.

103221213131221 is a deficient number, since it is larger than the sum of its proper divisors (5432695427979).

103221213131221 is an equidigital number, since it uses as much as digits as its factorization.

103221213131221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5432695427978.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 103221213131221 its reverse (122131312122301), we get a palindrome (225352525253522).

The spelling of 103221213131221 in words is "one hundred three trillion, two hundred twenty-one billion, two hundred thirteen million, one hundred thirty-one thousand, two hundred twenty-one".