30031041221 has 4 divisors (see below), whose sum is σ = 30322604832. Its totient is φ = 29739477612.

The previous prime is 30031041217. The next prime is 30031041247. The reversal of 30031041221 is 12214013003.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12214013003 = 65701 ⋅185903.

It is a cyclic number.

It is not a de Polignac number, because 30031041221 - 2² = 30031041217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30031041221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30031041121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145781651 + ... + 145781856.

It is an arithmetic number, because the mean of its divisors is an integer number (7580651208).

Almost surely, 2^30031041221 is an apocalyptic number.

It is an amenable number.

30031041221 is a deficient number, since it is larger than the sum of its proper divisors (291563611).

30031041221 is a wasteful number, since it uses less digits than its factorization.

30031041221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291563610.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 30031041221 its reverse (12214013003), we get a palindrome (42245054224).

The spelling of 30031041221 in words is "thirty billion, thirty-one million, forty-one thousand, two hundred twenty-one".