30011311221 has 8 divisors (see below), whose sum is σ = 40016661024. Its totient is φ = 20006751120.

The previous prime is 30011311189. The next prime is 30011311247. The reversal of 30011311221 is 12211311003.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30011311221 - 2⁵ = 30011311189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30011311221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30011311261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102186 + ... + 265451.

It is an arithmetic number, because the mean of its divisors is an integer number (5002082628).

Almost surely, 2^30011311221 is an apocalyptic number.

It is an amenable number.

30011311221 is a deficient number, since it is larger than the sum of its proper divisors (10005349803).

30011311221 is a wasteful number, since it uses less digits than its factorization.

30011311221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394851.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 30011311221 its reverse (12211311003), we get a palindrome (42222622224).

The spelling of 30011311221 in words is "thirty billion, eleven million, three hundred eleven thousand, two hundred twenty-one".