30221011221 has 4 divisors (see below), whose sum is σ = 40294681632. Its totient is φ = 20147340812.

The previous prime is 30221011217. The next prime is 30221011243. The reversal of 30221011221 is 12211012203.

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 30221011221 - 2² = 30221011217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30221011221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30221011021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5036835201 + ... + 5036835206.

It is an arithmetic number, because the mean of its divisors is an integer number (10073670408).

Almost surely, 2^30221011221 is an apocalyptic number.

It is an amenable number.

30221011221 is a deficient number, since it is larger than the sum of its proper divisors (10073670411).

30221011221 is a wasteful number, since it uses less digits than its factorization.

30221011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10073670410.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 30221011221 its reverse (12211012203), we get a palindrome (42432023424).

The spelling of 30221011221 in words is "thirty billion, two hundred twenty-one million, eleven thousand, two hundred twenty-one".