103231012221 has 40 divisors (see below), whose sum is σ = 154731044160. Its totient is φ = 68588275392.

The previous prime is 103231012193. The next prime is 103231012231. The reversal of 103231012221 is 122210132301.

It is not a de Polignac number, because 103231012221 - 2⁵ = 103231012189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 103231012194 and 103231012203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103231012231) 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 in 39 ways as a sum of consecutive naturals, for example, 37172185 + ... + 37174961.

It is an arithmetic number, because the mean of its divisors is an integer number (3868276104).

Almost surely, 2^103231012221 is an apocalyptic number.

It is an amenable number.

103231012221 is a deficient number, since it is larger than the sum of its proper divisors (51500031939).

103231012221 is an equidigital number, since it uses as much as digits as its factorization.

103231012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4175 (or 4166 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 103231012221 its reverse (122210132301), we get a palindrome (225441144522).

The spelling of 103231012221 in words is "one hundred three billion, two hundred thirty-one million, twelve thousand, two hundred twenty-one".