30103112221 has 12 divisors (see below), whose sum is σ = 37711591932. Its totient is φ = 23817846528.

The previous prime is 30103112191. The next prime is 30103112227. The reversal of 30103112221 is 12221130103.

It can be written as a sum of positive squares in 2 ways, for example, as 19619604900 + 10483507321 = 140070^2 + 102389^2 .

It is not a de Polignac number, because 30103112221 - 2²⁷ = 29968894493 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30103112195 and 30103112204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30103112227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23628180 + ... + 23629453.

It is an arithmetic number, because the mean of its divisors is an integer number (3142632661).

Almost surely, 2^30103112221 is an apocalyptic number.

It is an amenable number.

30103112221 is a deficient number, since it is larger than the sum of its proper divisors (7608479711).

30103112221 is a wasteful number, since it uses less digits than its factorization.

30103112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47257660 (or 47257653 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 30103112221 its reverse (12221130103), we get a palindrome (42324242324).

The spelling of 30103112221 in words is "thirty billion, one hundred three million, one hundred twelve thousand, two hundred twenty-one".