30031103221 has 16 divisors (see below), whose sum is σ = 35307403776. Its totient is φ = 25009335936.

The previous prime is 30031103083. The next prime is 30031103257. The reversal of 30031103221 is 12230113003.

It is a cyclic number.

It is not a de Polignac number, because 30031103221 - 2²³ = 30022714613 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30031103195 and 30031103204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30031103261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 288066 + ... + 378211.

It is an arithmetic number, because the mean of its divisors is an integer number (2206712736).

Almost surely, 2^30031103221 is an apocalyptic number.

It is an amenable number.

30031103221 is a deficient number, since it is larger than the sum of its proper divisors (5276300555).

30031103221 is a wasteful number, since it uses less digits than its factorization.

30031103221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666468.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 30031103221 its reverse (12230113003), we get a palindrome (42261216224).

The spelling of 30031103221 in words is "thirty billion, thirty-one million, one hundred three thousand, two hundred twenty-one".